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Trailing-Edge - PDP-10 Archives - tops20tools_v6_9-jan-86_dumper - tools/sftovx/sf2vax.rno
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.ps58,75;.rm75;.lm0;.sp1;.j;.f
.b2
The following are trademarks of Digital Equipment Corporation:
.b;.ts10,27,44
	DEC	DECsystem-10	PDT
.br
	DECUS	DECSYSTEM-20	RSTS
.br
	DIGITAL	DECwriter	RSX
.br
	PDP	DIBOL	VMS
.br
	UNIBUS	EduSystem	VT
.br
	VAX	IAS	digital logo
.br
	DECnet	MASSBUS
.b4;.c
SF2VAX.MEM    October, 1983
.b;.c
Revised December, 1983
.b2
.hl1 ^&purpose\&
.b2
The purpose of this document is to explain the migration
process from APLSF to VAX APL which is performed by the tool SFTOVX.
An example is provided to illustrate the process 
of migrating APL workspaces and data files.  This document also 
explains the possible error messages and lists the APLSF/VAX APL 
incompatibilities.
.b2
.hl1 ^&explanation\&
.b2
The migration of APL workspaces and data files from APLSF to VAX APL occurs 
through text files.  MIGRATE, an APL function, builds a batch 
control stream which
then executes APL functions that create text files from APL files.
Note that the easiest way to perform the migration in an unattended 
mode is by building this batch control stream.
MIGRATE interacts with the user to find out what should be transported and
prompts the user for filenames.  MIGRATE also allows
the user to specify an optional filter workspace (containing functions 
such as FILTER, ASFILTER, and DAFILTER) which allows the user to modify the 
file before it is transported.  Files which can be transferred 
include workspaces, and /AS, /IS, /DA and /BS data files.
.b
Through MIGRATE, a batch stream is executed which invokes the DRIVER 
function to
transfer workspaces, the ASDRIVER function to transfer /AS data files, etc.
Note that when the driver function is invoked to
transfer a data file, its name reflects the type of file it is 
transferring (for example, ASDRIVER, DADRIVER).  
.b
These driver functions dump the workspaces and data files as input scripts 
into text files which are then transferred by the user's own methods 
to the VAX.  They are then used by VAX APL
as )INPUT files.  DRIVER  transports variables, system variables, 
channel assignments, workspace identifications, groups, and unlocked functions
within APLSF workspaces as text to the VAX.  While the text file is being made,
DRIVER examines the user-defined functions to perform source transformations 
that minimize the incompatibilities between APLSF and VAX APL.  
.b
Note that these 
transformations do not occur within literals (for example, arguments to 
execute).  Any informational messages displayed for the user are comment lines 
in the file that is used as )INPUT to VAX APL.
.b
Once DRIVER has generated the text file and the user has 
transferred it to the VAX, the user executes an APL function called SUBMIT.
SUBMIT interacts with the user and builds a VMS command file that, when run
indirectly or in batch, will execute VAX APL for each input script specified 
by the user.  When these input scripts are processed by means of VAX APL,
a workspace or a data file is created on the VAX.  These created 
files are the migrated images of their counterparts on TOPS-20.
.b
This is a general tool which can be overlaid 
by the user's software in certain instances (for example, the FILTER 
function).
.b
.nt
DRIVER performs a )LOAD of each workspace being migrated.  If the 
workspace contains a nonempty .BXLX, the .BXLX will be executed.
This may interfere with the migration process. Note that APLSF has
no facilities to suppress .BXLX when loading a workspace.
.en
.b2
.hl 2 ^&Files in the Migration Tool\&
Several files are contained in the migration tool.
.b;.lm0;.f;.j
SFTOVX contains files for both the -20 and the VAX.  The
tools themselves assume that they reside in a directory
with the logical name APLT2V:, both on the VAX and the -20.
The following files are contained in SFTOVX.
.b
.ls 1,"o"
.le;SF2VAX.MEM
.b
SF2VAX.MEM is the documentation for the APLSF to VAX APL
migration tool.  It contains only APL TTY mnemonics for
the APL characters.  It may be listed on an ASCII printer
for easy access.  All APL expressions in SF2VAX.MEM 
assume .BXIO is 1.
.b
There are detailed examples listed in SF2VAX.MEM.  The
examples are always reproduced in APL TTY mnemonics, even
though some of the files produced by the migration tool
contain APL key-paired ASCII APL characters.  Note 
that .KM and .KJ are the VAX APL TTY mnemonics for
<carriage return> and <linefeed>.  Since the files built for
migration have lines longer than 132 characters, the examples
listed in Sf2VAX.MEM have their lines wrapped to fit on a
printed line.  When such wrapping occurs, the line ends with
"<wrap>" to show that it was wrapped for expository
reasons.
.le;BXAV.LA
.b
This is a translation table from APLSF's .BXAV to VAX 
APL's .BXAV used by the migration tool.  The file contains
APL key-paired ASCII APL character set and therefore 
must be printed or displayed on a device that can display 
APL characters.
.b
Note the following:
.ls 1,"-"
.le;All of the APLSF .BXAV characters that print as .SQ are translated 
into the VAX APL character .SS (.BXAV [210]).
.le;The following APLSF .BXAV characters do not exist in VAX APL's 
_.BXAV and are translated into the VAX APL character .CO (.BXAV [211]):
38 (.FI), 121, 103, 113, 115, 116, 117, 122,123 (all internal use 
characters).  See .LD.USAV below for an explanation of these internal use 
characters in APLSF.
.le;VAX APL allows illegal overstrikes in data, in quoted literals, 
and in .QQ input.  The text files produced by this migration tool 
contain APL overstrikes.  Therefore, an ASCII backspace cannot be 
migrated as a single character because VAX APL will assume it to be 
part of an overstrike.  Therefore, APLSF .BXAV [99 265] are translated
into the VAX APL character .CC (.BXAV [207]).
.le;Internal carriage return (.BXAV [102] in APL-SF) is
converted to .CC if it is inside a function because .BXBOX
is used to fix text. An internal carriage return inside a
character array is not affected.
.le;There are three overstrikes in VAX APL's .BXAV that are not in 
APLSF's .BXAV.  If these overstrikes exist as three characters in a 
row in the APLSF data being migrated, they will appear as a single 
character in VAX APL.  These are the following:
.b
#####.CC (, over -)#######VAX APL##.BXAV [207]
.br
#####.SS (.LU over .US)###VAX APL##.BXAV [210]
.br
#####.CO (.RU over .US)###VAX APL##.BXAV [211]
.els
.le;SF2VX0.APL
.b
SF2VX0.APL is built using the text file SF2VX0.IN 
as a )INPUT file to APLSF.  For example, the following
terminal session builds SF2VX0.APL on the -20:
.b;.ts 12,18
	@APLSF
.br
	terminal..TT
.br
	<APLSF banner>
.br
	CLEAR WS
.br
		)INPUT SF2VX0,IN
.br
	<messages>
.b
SF2VX0.APL is an APLSF workspace containing the function
MIGRATE.  MIGRATE interacts with the user to build a
control file that can be run in batch. The control 
file performs
the time-consuming task of interacting with the DRIVER
functions that transform APLSF workspaces and data files
into text files.
.b
On the -20, put SF2VX0.APL in APLT2V:.
.le;SF2VX1.APL
.b
SF2VX1.APL is built from the APLSF )INPUT file SF2VX1.IN.
.b
SF2VX1.APL is an APLSF workspace containing the function
DRIVER.  DRIVER runs inside an APLSF workspace to transform
it into a text file.  SF2VX1.APL transfers the
workspace identification, the file channel assignments, the 
settable
system variables, the user-defined groups, the user-defined
functions, and the variables.  It also performs certain
source transformations inside user-defined functions in an
effort to minimize incompatibilities between APLSF and VAX
APL.
.b
On the -20, put SF2VX1.APL in APLT2V:.
.le;SF2VX3.APL
.b
SF2VX3.APL is built from the VAX APL )INPUT file SF2VX3.IN.
.b
SF2VX3.APL is a VAX APL workspace containing numerous
user-defined functions that simulate the behavior of
certain APLSF primitives under VAX APL.  The source
transformations performed by DRIVER (in SF2VX1.APL)
replace certain APLSF primitives with these user-defined
APL functions:
.ls 1,"-"
.le;_.LD.USEN uses .BXVR under VAX APL to simulate monadic
_.EN from APLSF.
.le;_.LD.USDE uses monadic .EP under VAX APL to simulate
monadic .DE from APLSF.
.le;_.LD.USOM uses B/.IO.RO B under VAX APL to simulate
_.OM B from APLSF.
.le;_.LD.USDQ uses a particular setting of .BXCT under
VAX APL to simulate .DQ from APLSF.
.le;_.LD.USAB sets .BXCT to 0 under VAX APL before
simulating dyadic .AB from APLSF.
.le;_.LD.USIB simulates certain monadic I-beams under APLSF
on VAX APL.  The ones that cannot be simulated or are
not supported under APLSF signal an error.
.le;_.LD.USAPPEND, .LD.USDEQ, .LD.USENQ, .LD.USFCM, and
_.LD.USMTP replace the APLSF system functions .BXAPPEND,
_.BXDEQ, .BXENQ, .BXFCM, and .BXMTP.  These user-defined
functions report functionality that is "NOT AVAILABLE
IN VAX APL".
.le;_.LD.USASCII replaces .BXASCII from APLSF. It also returns
a vector of 128 characters from VAX APL's .BXAV which
closely resemble the ASCII characters.
.le;_.LD.USAV replaces .BXAV from APLSF.  It also returns
a vector of 512 characters from VAX APL's .BXAV which
closely resemble APLSF's .BXAV.  See the file BXAV.LA for the
_.BXAV translation table in APL character set.
.b
Note that all of the characters in APLSF's .BXAV that print as
_.SQ are simulated by VAX APL's .BXAV [251].  The following .BXAV
codes in APLSF are not supported and have been replaced by .BXAV [211]:
.b
###APLSF .BXAV index######name
.b
####38####################.FI
.br
###101####################double linefeed
.br
###103####################null
.br
###113####################left bracket
.br
###115####################right bracket
.br
###116####################up arrow
.br
###117####################left arrow
.br
###122####################tilde
.br
###123####################delete
.le;_.LD.USASS replaces .BXASS from APLSF and reports an
error if its argument contains an APLSF password, a
"ppn" surrounded by square brackets, or the switches
/BS or /DUMP, since none of these are supported in VAX APL.
.le;_.LD.USCHS, .LD.USCLS, .LD.USDAS, and .LD.USFLS replace
the APLSF system functions .BXCHS, .BXCLS, .BXDAS, and
_.BXFLS.  While all of these system functions exist in
VAX APL, their behavior in VAX APL on empty arguments
and arguments greater than 100 is different from under
APLSF.  These user-defined functions simulate the
behavior under APLSF in these cases.
.le;_.LD.USCIQ, .LD.USCOQ, and .LD.USDVC replace the APLSF
system functions .BXCIQ, .BXCOQ and .BXDVC.  While
all of these system functions exist in VAX APL, their
behavior in VAX APL is different from under APLSF.
These user-defined functions report an error that the
specific system function is "IN VAX APL" but is "INCOMPATIBLE
WITH APLSF".
.le;_.LD.USQLD, .LD.USQCO and .LD.USQPC replace the APLSF
system functions .BXQLD, .BXQCO, and .BXQPC.  These
user-defined functions check their argument for an
APLSF-style password on the workspace being accessed
and replace it with a VAX APL-style password.
.le;_.LD.USRENAME replaces the APLSF system function
_.BXRENAME.  This user-defined function is designed to
simulate the behavior of APLSF's .BXRENAME by using the command
".EP')DO RENAME ..." in VAX APL.
.le;_.LD.USTT replaces the unsettable APLSF system variable
_.BXTT.  This user-defined function uses .BXTT in VAX
APL to construct the correct value returned by .BXTT
in APLSF for "terminal type".
.le;Because the user may not desire to perform all of the 
transformations, note that the primitives are in TAB3 and their
replacements are in the rows of MAP3.  The system function names are
located in TAB4.
.els
On the VAX, put SF2VX3.APL in APLT2V:.
.le;SF2VX4.APL
.b
SF2VX4.APL is built from the APLSF )INPUT file SF2VX4.IN.
.b
SF2VX4.APL is an APLSF workspace that contains the file
drivers, DRIVER, ASDRIVER, ISDRIVER, BSDRIVER, and DADRIVER.  
These drivers are used to transform APLSF data files (/AS, /IS,
/BS, and /DA files, respectively) into text files.
.b
On the -20, put SF2VX4.APL in APLT2V:.
.le;SF2VX5.APL
.b
SF2VX5.APL is built from the VAX APL )INPUT file SF2VX5.IN.
.b
SF2VX5.APL is a VAX APL workspace that contains the function
SUBMIT.  SUBMIT interacts with the user to build a
command file that can be run in batch that will perform
the time-consuming task of running VAX APL on all of the
text files that have been migrated from the -20.
.b
On the VAX, put SF2VX5.APL in APLT2V:.
.els
.hl 2 ^&Files Built by the Migration Tool\&
.b;.lm0
Several files are built by the migration tool.
.b
The APL functions in SFTOVX produce files that either run other
tools or consist of text that should be transferred from the -20
to the VAX.
.ls 1,"o"
.le;MIGRATE in SF2VX0.APL on the -20
.b
MIGRATE produces a batch control file named MIGnnn.CTL,
where "nnn" is a number from 000 through 999, in the
connected directory.  It chooses "nnn" by finding the first
such file name that does not exist.
.b
The workspaces and APL data files on the -20 that are to be 
migrated
to the VAX can reside in any accessible directory, as long
as the file is not protected against reading.
.le;DRIVER in SF2VX1.APL on the -20
.b
DRIVER produces a file named "wsid.W2V" where "wsid" is the
workspace identifer of the workspace being transferred.
The .W2V file contains APL key-paired ASCII APL characters.
.le;File drivers in SF2VX4.APL on the -20
.b
ASDRIVER, ISDRIVER, BSDRIVER, and DADRIVER each produce
files named "file.x2V", where "file" is the name of the
APL data file being transferred, and "x" is "A", "I", "B",
or "D", indicating the type of DRIVER that produced the file.
The .x2V file contains APL key-paired ASCII APL characters.
.le;SUBMIT in SF2VX5.APL on the VAX
.b
SUBMIT produces a command file named SUBnnn.COM, where "nnn"
is a number from 000 through 999, in the default directory.
It chooses "nnn" by finding the first such file name that
does not exist.
.b
The VAX APL images of workspaces and APL data files migrated
from the -20 will be constructed either in the default
directory on the VAX or in a directory associated with the
logical name APLnnn:, where "nnn" was chosen by the DRIVER
that produced the text file on the -20.  SUBMIT will prompt
the user for the definitions for these logical names.
.els
.hl 2 ^&User-Defined Filters\&
The following describes user-defined filters which handle special migration
difficulties.
.b
MIGRATE allows the user to specify a "filter workspace" to be
executed before the workspace or APL data file in question is
processed:
.ls 1,"o"
.le;Migrating workspaces
.b
The user-specified filter workspace is copied, using 
)COPY, into the
workspace and the function named FILTER is executed.
This niladic user-defined function can perform whatever 
transformations it wishes on the workspace.  To 
prevent this workspace from being migrated, it can circumvent 
further processing by exiting APLSF via )OFF HOLD.  When FILTER 
finishes,it is erased, using )ERASE, so it will not be 
migrated with the rest of the
workspace.  The migration process assumes that FILTER will
remove any objects that are not to be migrated from the
workspace before it completes.
.le;Migrating APL data files
.b
The user-specified filter workspace is copied, using 
)COPY, into the
workspace SF2VX4 and the function named "xxFILTER" is
executed, where "xx" represents the first two characters of the
DRIVER that will be executed.  ISFILTER, BSFILTER, and
DAFILTER are monadic (as are the associated drivers), where
the right argument is the name of the file being processed.
ASFILTER (and ASDRIVER) is dyadic, where the left argument
is the character set to be used to read the file (1 if TTY,
2 if APL) and the right argument is the file name.
.b
Note that it is important for users to provide their
own version of the xxREAD routine that the xxDRIVER calls
to process the data file, especially if the file being
processed is a /BS file with no headers on the records.
In that case, users are the only ones who know what
constitutes a record in the file.  There is 
internal documentation of the xxREAD and xxDRIVER functions
in SF2VX4.APL and SF2VX4.IN so users can determine if
they must provide their own xxREAD to migrate a data file.
.b
Several character set conversions take place. .SQ is
converted to .SS. Any element designated for internal use is
converted to .CO. Backspace is converted to .CC and any
internal carriage return  within a function is converted to .CC.
.els
.hl1 ^&example\&
Below is an example that illustrates the interaction between the user
and the migration tool.  The example is divided into five parts:
.ls 1
.le;MIGRATE running under APLSF 
.le;The TOPS-20 batch control file that results from running MIGRATE 
.le;DRIVER and the corresponding file drivers running under APLSF
.le;Transfer of text files to VAX by the user's own methods
.le;SUBMIT running under VAX APL
.els
The input scripts, the result of executing a DRIVER, follow 
the running of each corresponding DRIVER function.  Following each of these 
parts, there is a brief explanation of some lines of the script.
.b
Note that terminal output is in uppercase, with APL input indented six spaces.
Annotations are in lowercase.
.le;The user runs MIGRATE from the workspace APLT2V:SF2VX0 and 
describes the files that are to be processed.
.rm130;.ts6,12,25
	@APLSF
.br
	TERMINAL..TT
.br
		)LOAD APLT2V:SF2VX0
.br
	SAVED  10:41:05  9-SEP-83 7P
.br
			check to see what .CTL files are already on disk
.br
		)LIB *,CTL
.br
	DSK:
.br
	MIG000.CTL
.br
			MIGRATE will create DSK:MIG001.CTL
.br
		MIGRATE
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? <cr>
.br
			invalid input gets the help message
.br
	VALID FILE TYPES ARE W (WORKSPACE), A (/AS), I (/IS), D (/DA), B (/BS)
.br
	OR ANY SYSTEM COMMAND TO BE EXECUTED 
.br
	OR Q (TO QUIT)
.br
			and back to the prompt
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? )FOO
.br
			error 21 is INCORRECT {system} COMMAND
.br
	_.EP ')FOO' REPORTED ERROR 0 21
.br
			and back to the prompt
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? W
.br
			"revert" means go back to the previous question
.br
	WHAT FILE SPEC? [CR TO REVERT] <cr>
.br
			and back to the prompt
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? W
.br
			an illegal file spec
.br
	WHAT FILE SPEC? [CR TO REVERT] $
.br
			error 22 is INCORRECT PARAMETER {in a system command}
.br
	ERROR 0 22 IN FILESPEC $,APL
.br
			file does not exist
.br
	WHAT FILE SPEC? [CR TO REVERT] XXX
.br
	XXX,APL DOES NOT EXIST
.br
	WHAT FILE SPEC? [CR TO REVERT] <cr>
.br
			and back to the prompt
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? )LIB
.br
			output from .EP ')LIB'
.br
	DSK:
.br
	#####A
.br
	#####B
.br
			and back to the prompt
.br
			user wants to migrate workspaces
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? W
.br
			migrate all workspaces in the connected directory
.br
	WHAT FILE SPEC? [CR TO REVERT] *
.br
			use FILTER in FOO:W
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:W
.br
			workspaces DSK:A.APL and DSK:B.APL have been processed
.br
	!#WORKSPACE A,APL SETUP COMPLETE
.br
	!#WORKSPACE B,APL SETUP COMPLETE
.br
			user wants to do more
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
			user wants to migrate workspaces
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? W
.br
			wants to migrate DSK:WS.PD
.br
	WHAT FILE SPEC? [CR TO REVERT] WS,PD
.br
			no filter this time
.br
	USER DEFINED FILTER? [CR IF NONE] <cr>
.br
			the WS is locked
.br
	WORKSPACE WS,PD IS LOCKED
.br
			if the user provides the password, the WS can be 
.br
			processed
.br
	WHAT IS THE PASSWORD? [CR TO SKIP THIS WS] FOO
.br
	!#WORKSPACE WS,PD SETUP COMPLETE
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? W
.br
	WHAT FILE SPEC? [CR TO REVERT] WS,PD
.br
	USER DEFINED FILTER? [CR IF NONE] <cr>
.br
	WORKSPACE WS,PD IS LOCKED
.br
			user wants to skip processing of WS.PD
.br
	WHAT IS THE PASSWORD? [CR TO SKIP THIS WS] <cr>
.br
	!#SKIPPING WORKSPACE WS,PD
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? )LIB WRK:*,ADA
.br
	#####A.ADA
.br
	#####B.ADA
.br
			user wants to process /DA files
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? D
.br
	WHAT FILE SPEC? [CR TO REVERT] WRK:*.ADA
.br
			use DAFILTER in FOO:DA
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:DA
.br
	!#DA FILE WRK:A,ADA SETUP COMPLETE
.br
	!#DA FILE WRK:B,ADA SETUP COMPLETE
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
			user wants to process /AS files
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? A
.br
	WHAT FILE SPEC? [CR TO REVERT] A.AAS
.br
			an extra question for /AS files only
.br
			empty input causes a reprompt
.br
	WHAT CHARACTER SET? [TTY OR BIT OR KEY] <cr>
.br
			invalid input gets the help message
.br
	WHAT CHARACTER SET? [TTY OR BIT OR KEY] W
.br
	VALID CHARACTER SETS FOR READING /AS FILES ARE T (TTY), B (BIT), K (KEY)
.br
	WHAT CHARACTER SET? [TTY OR BIT OR KEY] T
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:TTY
.br
	!#AS FILE A,AAS SETUP COMPLETE
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? A
.br
	WHAT FILE SPEC? [CR TO REVERT] A.AAS
.br
	WHAT CHARACTER SET? [TTY OR BIT OR KEY] K
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:KEY
.br
	!#AS FILE A,AAS SETUP COMPLETE
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? A
.br
	WHAT FILE SPEC? [CR TO REVERT] A.AAS
.br
	WHAT CHARACTER SET? [TTY OR BIT OR KEY] B
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:BIT
.br
	!#AS FILE A,AAS SETUP COMPLETE
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? )LIB *.AAS[4,244]
.br
	DSK:
.br
	#####A.AAS
.br
	#####B.AAS
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? A
.br
			file spec may contain [ppn]
.br
	WHAT FILE SPEC? [CR TO REVERT] *.AAS[4,244]
.br
	WHAT CHARACTER SET? [TTY OR BIT OR KEY] T
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:AS
.br
	!#AS FILE A,AAS[4,244] SETUP COMPLETE
.br
	!#AS FILE B,AAS[4,244] SETUP COMPLETE
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? )LIB WRK:*,AIS[4,244]
.br
	#####A.AIS
.br
	#####B.AIS
.br
			user wants to process /IS files
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? I
.br
	WHAT FILE SPEC? [CR TO REVERT] WRK:*.AIS[4,244]
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:IS
.br
	!#IS FILE WRK:A,AIS[4,244] SETUP COMPLETE
.br
	!#IS FILE WRK:B,AIS[4,244] SETUP COMPLETE
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Y
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? )LIB *.ABI
.br
	DSK:
.br
	#####A.ABI
.br
	#####B.ABI
.br
			user wants to process /BS files
.br
	WHAT TYPE OF FILE DO YOU WISH TO MIGRATE? B
.br
	WHAT FILE SPEC? [CR TO REVERT] *.ABI
.br
	USER DEFINED FILTER? [CR IF NONE] FOO:BI
.br
	!#BS FILE A,ABI SETUP COMPLETE
.br
	!#BS FILE B,ABI SETUP COMPLETE
.br
			user wants to quit
.br
	DO YOU HAVE MORE FILES TO PROCESS? [Y OR N] Q
.br
			MIGRATE built MIG001.CTL all right
.br
	!#MIG001,CTL [4,244]/AS COMPLETED
.br
		)OFF HOLD
.br
	@
.rm 75;.b2
Note that ! means the message will be listed in the CTL file.  
Although users may insert a comma (,) or a period (.) in the filespec, 
only a comma is output in the messages.
.b
Users can revert to the 'type of file' prompt even if they are at the 
file spec prompt level.  This allows them to check what files are on disk 
through )LIB.  Note the following behavior of )LIB in APLSF.
.b
For R__.ep')LIB ' F, where R is the result and F is the argument, the 
following apply.
.ls 1,"o"
.le;F may have a comma or a period before the file type.  
.le;If F is of the form f or f,apl or f,typ or DSK:f..., R's first line will
be DSK:.  
.le;If F has no *, R will be a vector.
.le;If F has a *, R is a matrix, .BXPW wide, with filenames right
justified to column six and .filetype in column 7 if the type is not
APL.  If the file type is .APL, ,APL will not be present in R.
.le;R is 0 e .ro 0 if an error occurs.
.le;If 0 = .ro,R, F does not exist.
.le;If F is  dev:f... and F does not exist, 0 = .roR.
.le;If F is f... or DSK:F... and F does not exist, R is DSK:
.le;")LIB f*" does not work in APLSF.
.le;")LIB F-X" yields 22 INCORRECT PARAMETER
.le;)LIB must have the device name (dev:) before the file 
specification and the [ppn] after the file specification.
.els
.le;MIGRATE creates a batch control file, MIG001.CTL, which contains
the following:
.b
.ls,"o"
.le;The files MIGRATE built and when the building occurred (.BXTS)
.b;.ts 10
	!#BUILDING MIG001,CTL [4,244]/AS 1983 9 9 10 43 8 990
.br
	@NOERROR
.le;User errors that occurred while using MIGRATE	
.b
	!#MIGRATING $,APL TYPE ,APL
.br
	ERROR 0 22 IN FILESPEC $,APL
.br
	!#MIGRATING XXX,APL TYPE ,APL
.br
	XXX,APL DOES NOT EXIST
.le;Workspace processing (with the user-defined filter that
must be named FILTER
in the specified workspace, for example, FOO:W)
.b
	!#MIGRATING *,APL TYPE ,APL
.br
	!#USING FILTER FOO:W
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD A,APL
.br
	*)COPY FOO:W
.br
	*FILTER
.br
	*)ERASE FILTER
.br
	*)PCOPY APLT2V:SF2VX1 DRIVER
.br
	*DRIVER
.br
	*)OFF HOLD
.br
	!#WORKSPACE A,APL SETUP COMPLETE
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD B,APL
.br
	*)COPY FOO:W
.br
	*FILTER
.br
	*)ERASE FILTER
.br
	*)PCOPY APLT2V:SF2VX1 DRIVER
.br
	*DRIVER
.br
	*)OFF HOLD
.br
	!#WORKSPACE B,APL SETUP COMPLETE
.le;Locked workspace processing (no user-defined filter)
.b
	!#MIGRATING WS,PD TYPE ,APL
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD WS,PD-FOO
.br
	*)PCOPY APLT2V:SF2VX1 DRIVER
.br
	*DRIVER
.br
	*)OFF HOLD
.br
	!#WORKSPACE WS,PD SETUP COMPLETE
.le;Locked workspace processing - workspace skipped because user 
doesn't know password
.b 
	!#MIGRATING WS,PD TYPE ,APL
.br
	!#SKIPPING LOCKED WORKSPACE WS,PD
.le;/DA files processing (with the user-defined filter, must be named DAFILTER
in the specified workspace, for example, FOO:DA).  Note the 
file specification contains a device name.
.b
	!#MIGRATING WRK:*,ADA TYPE ,ADA
.br
	!#USING FILTER FOO:DA
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:DA
.br
	*####DAFILTER 'WRK:A,ADA'
.br
	*)ERASE DAFILTER
.br
	*####DADRIVER 'WRK:A,ADA'
.br
	*)OFF HOLD
.br
	!#DA FILE WRK:A,ADA SETUP COMPLETE
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:DA
.br
	*####DAFILTER 'WRK:B,ADA'
.br
	*)ERASE DAFILTER
.br
	*####DADRIVER 'WRK:B,ADA'
.br
	*)OFF HOLD
.br
	!#DA FILE WRK:B,ADA SETUP COMPLETE
.le;/AS files processing (with the user-defined filter ASFILTER, which 
is dyadic).  Note the TT/BIT response to the "terminal..." prompt for the /BIT 
character set.
.b
	!#MIGRATING A,AAS TYPE ,AAS
.br
	!#USING CHARACTER SET /TTY
.br
	!#USING FILTER FOO:TTY
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:TTY
.br
	*#1##ASFILTER 'A,AAS'
.br
	*)ERASE ASFILTER
.br
	*#1##ASDRIVER 'A,AAS'
.br
	*)OFF HOLD
.br
	!#AS FILE A,AAS SETUP COMPLETE
.br
	!#MIGRATING A,AAS TYPE ,AAS
.br
	!#USING CHARACTER SET /KEY
.br
	!#USING FILTER FOO:KEY
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:KEY
.br
	*#2##ASFILTER 'A,AAS'
.br
	*)ERASE ASFILTER
.br
	*#2##ASDRIVER 'A,AAS'
.br
	*)OFF HOLD
.br
	!#AS FILE A,AAS SETUP COMPLETE
.br
	!#MIGRATING A,AAS TYPE ,AAS
.br
	!#USING CHARACTER SET /BIT
.br
	!#USING FILTER FOO:BIT
.br
	@APLSF
.br
	*TT/BIT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:BIT
.br
	*#2##ASFILTER 'A,AAS'
.br
	*)ERASE ASFILTER
.br
	*#2##ASDRIVER 'A,AAS'
.br
	*)OFF HOLD
.br
	!#AS FILE A,AAS SETUP COMPLETE
.le;/AS files processing (with user-defined filter).  Note the file 
specification contains [ppn].
.b
	!#MIGRATING *,AAS[4,244] TYPE ,AAS
.br
	!#USING CHARACTER SET /TTY
.br
	!#USING FILTER FOO:AS
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:AS
.br
	*#1##ASFILTER 'A,AAS[4,244]'
.br
	*)ERASE ASFILTER
.br
	*#1##ASDRIVER 'A,AAS[4,244]'
.br
	*)OFF HOLD
.br
	!#AS FILE A,AAS[4,244] SETUP COMPLETE
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:AS
.br
	*#1##ASFILTER 'B,AAS[4,244]'
.br
	*)ERASE ASFILTER
.br
	*#1##ASDRIVER 'B,AAS[4,244]'
.br
	*)OFF HOLD
.br
	!#AS FILE B,AAS[4,244] SETUP COMPLETE
.le;/IS files processing (with user-defined filter).  Note the file 
specification contains both a device name and [ppn].
.b
	!#MIGRATING WRK:*,AIS[4,244] TYPE ,AIS
.br
	!#USING FILTER FOO:IS
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:IS
.br
	*####ISFILTER 'WRK:A,AIS[4,244]'
.br
	*)ERASE ISFILTER
.br
	*####ISDRIVER 'WRK:A,AIS[4,244]'
.br
	*)OFF HOLD
.br
	!#IS FILE WRK:A,AIS[4,244] SETUP COMPLETE
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:IS
.br
	*####ISFILTER 'WRK:B,AIS[4,244]'
.br
	*)ERASE ISFILTER
.br
	*####ISDRIVER 'WRK:B,AIS[4,244]'
.br
	*)OFF HOLD
.br
	!#IS FILE WRK:B,AIS[4,244] SETUP COMPLETE
.le;/BS files processing (with the user-defined filter BSFILTER in FOO:BI).
.b
	!#MIGRATING *,ABI TYPE ,ABI
.br
	!#USING FILTER FOO:BI
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:BI
.br
	*####BSFILTER 'A,ABI'
.br
	*)ERASE BSFILTER
.br
	*####BSDRIVER 'A,ABI'
.br
	*)OFF HOLD
.br
	!#BS FILE A,ABI SETUP COMPLETE
.br
	@APLSF
.br
	*TT
.br
	*)MAXCORE 352
.br
	*)LOAD APLT2V:SF2VX4
.br
	*)COPY FOO:BI
.br
	*####BSFILTER 'B,ABI'
.br
	*)ERASE BSFILTER
.br
	*####BSDRIVER 'B,ABI'
.br
	*)OFF HOLD
.br
	!#BS FILE B,ABI SETUP COMPLETE
.br
  	!#MIG001,CTL [4,244]/AS COMPLETED
.b
Note that @NOERROR means that SFTOVX continues processing in batch 
no matter what messages it receives.  The )ERASE that follows the copying 
of the filter workspace insures that the filter function will not be 
migrated.
.els
.le;The user runs DRIVER in APLT2V:SF2VX1 on DSK:TEST0.APL.
.b
.ls,"o"
.le;Workspace TEST0.APL contains the following:
.ls 1,"-"
.le;channels 1, 2, 4, 6, and 8 assigned
.le;various system variables settings different from a CLEAR WS
.le;two groups
.le;six functions (1 locked; 1 containing an error)
.le;six variables
.els
.le;DRIVER runs under APLSF, producing messages.
.rm130;.ts11,17
.b
	! MIGRATING TEST0,APL TYPE ,APL
.br
	@APLSF
.br
	terminal..TT
.br
	APL-20 DECSYSTEM-20 APLSF 2(552)
.br
	TTY226) 12:26:50 TUESDAY 27-SEP-83 USER [4,244]
.br
	CLEAR WS
.br
		)MAXCORE 352
.br
	WAS  40P
.br
		)LOAD TEST0,APL
.br
	SAVED  12:24:12 27-SEP-83 8P
.br
		)PCOPY APLT2V:SF2VX1 DRIVER
.br
	SAVED   9:21:55 27-SEP-83 16P
.br
		DRIVER
.br
	" *** '[4,244]' REPLACED BY 'APL000:' IN WSID
.br
	" *** 'FOO,ADA [4,244]/DA' REPLACED BY 'APL001:FOO,ADA /DA' ON CHANNEL 1
.br
	" *** 'TWO,AAS [4,244]/AS' REPLACED BY 'APL002:TWO,AAS /AS' ON CHANNEL 2
.br
	" *** 'DEV:FOUR,AIS [4,244]/IS' REPLACED BY 'APL004:FOUR,AIS /IS' ON CHANNEL 4
.br
	" *** 'DEV:SIX,ADA [4,4]/DA' REPLACED BY 'APL006:SIX,ADA /DA' ON CHANNEL 6
.br
	" *** 'EIGHT,ABI [4,4]/BS' REPLACED BY 'APL008:EIGHT,ABI /BS' ON CHANNEL 8
.br
	'1 QUAD NAMES WERE REMOVED FROM THE HEADER OF FF'
.br
	'ASSIGNMENTS TO THE FOLLOWING QUAD NAMES WERE REPLACED WITH QUAD SINK IN FF
.br
	AV      
.br
	'
.br
	'THE FOLLOWING PRIMITIVE FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	_.AB.OM.IB$
.br
	'
.br
	'THE FOLLOWING SYSTEM FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	AV 
.br    
	'
.br
	" *** LOCKED LOCKED
.br
	" *** BIG INTEGER IN Y
.br
		)OFF HOLD
.br
	TTY226) 12:27:05 27-SEP-83
.br
	CONNECTED   0:00:15 CPU TIME   0:00:08
.br
	2233 STATEMENTS 9337 OPERATIONS
.b
	EXIT
.br
	@
.le;DRIVER produces a script in TEST0.W2V:.  Note that APL000:, 
APL002:, APL004:, 
.br
APL006:, and APL008: must be defined on the VAX for 
TEST.W2V to work on the VAX.
.b
	" BUILDING TEST0,W2V [4,244]/AS 1983 9 27 12 26 53 675
.br
	)CLEAR
.br
	" *** '[4,244]' REPLACED BY 'APL000:' IN WSID
.br
	)WSID APL000:TEST0
.br
	)COPY APLT2V:SF2VX3
.br
	" *** 'FOO,ADA [4,244]/DA' REPLACED BY 'APL001:FOO,ADA /DA' ON CHANNEL 1
.br
	_.LD.USASS ' 1 APL001:FOO.ADA /DA'
.br
	" *** 'TWO,AAS [4,244]/AS' REPLACED BY 'APL002:TWO,AAS /AS' ON CHANNEL 2
.br
	_.LD.USASS ' 2 APL002:TWO.AAS /AS'
.br
	" *** 'DEV:FOUR,AIS [4,244]/IS' REPLACED BY 'APL004:FOUR,AIS /IS' ON CHANNEL 4
.br
	_.LD.USASS ' 4 APL004:FOUR.AIS /IS'
.br
	" *** 'DEV:SIX,ADA [4,4]/DA' REPLACED BY 'APL006:SIX,ADA /DA' ON CHANNEL 6
.br
	_.LD.USASS ' 6 APL006:SIX.ADA /DA'
.br
	" *** 'EIGHT,ABI [4,4]/BS' REPLACED BY 'APL008:EIGHT,ABI /BS' ON CHANNEL 8
.br
	_.LD.USASS ' 8 APL008:EIGHT.ABI /BS'
.br
	_.BXRESET
.br
	_.BXAUS__0
.br
	_.BXCT__0
.br
	_.BXGAG__0
.br
	_.BXIO__0
.br
	_.BXPP__10
.br
	_.BXPW__79
.br
	_.BXRL__0
.br
	_.BXTIMELIMIT__0
.br
	A.US__''
.br
	A.US__A.US,'.BX:.KM.KJ######'
.br
	_.BXSF__10.ROA.US
.br
	A.US__''
.br
	A.US__A.US,'HI THERE - THIS IS .BXTRAP'
.br
	_.BXTRAP__24.ROA.US
.br
	A.US__''
.br
	_.BXLX__0.ROA.US'
.br
	A.US__''
.br
	A.US__A.US,')GROUP G1 A       BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB C '
.br
	_.XQ A.US
.br
	A.US__''
.br
	A.US__A.US,')GROUP G2 XXXXXXXXXXXXXXXXXXXXXXXXXXXXX   Y       ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ    '
.br
	A.US__A.US,'      AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA                                                '
.br
	A.US__A.US,'  '
.br
	_.XQ A.US
.br
	A.US__''
.br
	A.US__A.US,'R__DUPSOUT X                    .KM.KJ'
.br
	A.US__A.US,'"REMOVES DUPLICATES FROM VECTOR .KM.KJ'
.br
	A.US__A.US,'R__((.IO.ROX)=X.IOX)/X__,X              .KM.KJ'
.br
	A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	A.US__''
.br
	A.US__A.US,'ERROR.KM.KJ'
.br
	A.US__A.US,'L:1   .KM.KJ'
.br
	A.US__A.US,'L:2   .KM.KJ''
.br
	A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	A.US__''
.br
	A.US__A.US,'Z__A F B;T;.BXIO.KM.KJ'
.br
	A.US__A.US,'L:1                              .KM.KJ'
.br
	A.US__A.US,'''1 2 3 4 5 6 7 8 9 0 + # .DM''      .KM.KJ'
.br
	A.US_A.US,'''.DD .NG < .LE = .GE > .NE _& .OR - % $''      .KM.KJ'
.br
	A.US__A.US,'''Q W E R T Y U I O P __ .GO''        .KM.KJ'
.br
	A.US__A.US,'''? .OM .EP .RO ~ _^ .DA .IO .LO * { }''        .KM.KJ'
.br
	A.US__A.US,'''A S D F G H J K L ( ) .RK''        .KM.KJ'
.br
	A.US__A.US,'''.AL .CE .FL .US .DL .LD .SO '''' .BX [ ] .LK''       .KM.KJ'
.br
	A.US__A.US,'''Z X C V B N M , . /''            .KM.KJ'
.br
	A.US__A.US,'''LEFT .LU RIGHT .RU .DU .UU .DE .EN | ; : _\'' .KM.KJ'
.br
	A.US__A.US,'''.ZA .ZB .ZC .ZD .ZE .ZF .ZG .ZH .ZI .ZJ .ZK .ZL .ZM''      .KM.KJ'
.br
	A.US__A.US,'''.ZN .ZO .ZP .ZQ .ZR .ZS .ZT .ZU .ZV .ZW .ZX .ZY .ZZ''      .KM.KJ'
.br
	A.US__A.US,'''.UD ! " .IB .XQ .FM .DQ .IQ .OQ .QQ .QD .GU .GD .PD''    .KM.KJ'
.br
	A.US__A.US,'''.NR .NN .LG .RV .TR .CR .CS .CB''                .KM.KJ'
.br
	A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	A.US__''
.br
	'2 QUAD NAMES WERE REMOVED FROM THE HEADER OF FF'
.br
	A.US__A.US,'FF;.BXIO.KM.KJ'
.br
	A.US__A.US,' .LD.USOM ''.OM''       .KM.KJ'
.br
	A.US__A.US,'A .LD.USAB ''|''      .KM.KJ'
.br
	A.US__A.US,' .LD.USIB ''.IB''       .KM.KJ'
.br
	A.US__A.US,'.BXSINK__ .LD.USAV    .KM.KJ'
.br
	A.US__A.US,'''$'' .BXFMT ''$''    .KM.KJ'
.br
	A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	'ASSIGNMENTS TO THE FOLLOWING QUAD NAMES WERE REPLACED WITH QUAD SINK IN FF
.br
	AV      
.br
	'
.br
	'THE FOLLOWING PRIMITIVE FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	|.OM.IB$
.br
	'
.br
	'THE FOLLOWING SYSTEM FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	AV 
.br    
	'
.br
	A.US__''
.br
	A.US__A.US,'HOWDUPSOUT                                                          .KM.KJ'
.br
	A.US__A.US,'''THIS FUNCTION RETURNS A VECTOR FORMED BY TAKING THE RIGHT ARGUMENT'' .KM.KJ'
.br
	A.US__A.US,'''AND REMOVING DUPLICATES FROM IT.''                                   .KM.KJ'
.br
	A.US__A.US,'''THE RIGHT ARGUMENT MAY BE A NUMERIC OR CHARACTER SCALAR OR VECTOR.'' .KM.KJ'
.br
	A.US__A.US,''' ''                                                                  .KM.KJ'
.br
	A.US__A.US,''' ....................TRY.......''                                    .KM.KJ'
.br
	A.US__A.US,'''.................................RO.BX__DUPSOUT .IO12''                     .KM.KJ'
.br
	A.US__A.US,'''.................................RO.BX__DUPSOUT 12.RO .IO3 ''                 .KM.KJ'
.br
	A.US__A.US,'''NOTE THAT SCALARS BECOME VECTORS OF LENGTH 1''                       .KM.KJ'
.br
	A.US__A.US,'''                                   .RO.BX__DUPSOUT 1''                    .KM.KJ'
.br
	A.US__A.US,'3 1 .RO'' ''                                                             .KM.KJ'
.br
	A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	" *** LOCKED LOCKED
.br
	A.US__.IO0
.br
	A.US__A.US,0 1 2 3 4 5 6 7 8 9
.br
	A.US__A.US,10 11 12 13 14 15 16 17 18 19
.br
	A.US__A.US,20 21 22 23 24 25 26 27 28 29
.br
	A.US__A.US,30 31 32 33 34 35 36 37 38 39
.br
	A.US__A.US,40 41 42 43 44 45 46 47 48 49
.br
	A.US__A.US,50 51 52 53 54 55 56 57 58 59
.br
	A.US__A.US,60 61 62 63 64 65 66 67 68 69
.br
	A.US__A.US,70 71 72 73 74 75 76 77 78 79
.br
	A.US__A.US,80 81 82 83 84 85 86 87 88 89
.br
	A.US__A.US,90 91 92 93 94 95 96 97 98 99
.br
	X__100.ROA.US
.br
	A.US__.IO0
.br
	A.US__A.US,0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5
.br
	A.US__A.US,9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5
.br
	A.US__A.US,18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5
.br
	A.US__A.US,27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5 35.5
.br
	A.US__A.US,36.5 37.5 38.5 39.5 40.5 41.5 42.5 43.5 44.5
.br
	A.US__A.US,45.5 46.5 47.5 48.5 49.5 50.5 51.5 52.5 53.5
.br
	A.US__A.US,54.5 55.5 56.5 57.5 58.5 59.5 60.5 61.5 62.5
.br
	A.US__A.US,63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71.5
.br
	A.US__A.US,72.5 73.5 74.5 75.5 76.5 77.5 78.5 79.5 80.5
.br
	A.US__A.US,81.5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5
.br
	A.US__A.US,90.5 91.5 92.5 93.5 94.5 95.5 96.5 97.5 98.5
.br
	A.US__A.US,99.5
.br
	XX__100.ROA.US
.br
	A.US__.IO0
.br
	A.US__A.US,1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1#<wrap>
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	0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1#<wrap>
.br
	0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1
.br
	A.US__A.US,1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0#<wrap>
.br
	1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1
.br
	XXX__200.ROA.US
.br
	A.US__''
.br
	A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS!.RV.TR.IB.QQ#<wrap>
.br
	_.LG.NN.NR".GU.GD.CR.CS.CB.SS.PD.QD.IQ.OQ.DQ$.CO.XQ.FM.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.DD_<.LE.GE_>?.OM.EP.RO_^.DA.IO.AL.CE.FL()[].LU.RU.UU.US.SS.SS.SS__.GO.BX.NE=.DU.DE_&
.b
	A.US__A.US,'.OR~/\*_#%+-.LO|;,.SO.EN.DL:''[email protected]@#<wrap>
.br
	_.CO.LK.CO.CO.CO.DM{.RK}.CO.CO.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS'
.b
	A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS'
.b
	A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.WN.KA.KB.KC#<wrap>
.br
	_.KD.KE.KF.KG.CC.KI.KJ.KK.KL.KM.KN.KO.KP.KQ.KR.KS.KT.KU.KV.KW.KX.KY.KZ.WE.WF#<wrap>
.br
	_.WG.WR.WU.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS0123456789.SS.SS.SS.SS.SS'
.b
	A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.LDABCDEFGHIJKLMNOPQRSTUVWXYZ.SS !.QU.PS$.PC.AP''()*+,-./01'
.b
	A.US__A.US,'23456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]_^__`abcdefghijklmnopqrstuvwxyz{|}~.WD.SS.SS'
.b
	A.US__A.US,'.SS.SS.UD.ZA.ZB.ZC.ZD.ZE.ZF.ZG.ZH.ZI.ZJ.ZK.ZL.ZM.ZN.ZO.ZP.ZQ.ZR.ZS.ZT.ZU.ZV.ZW.ZX.ZY.ZZ.SS.SS.SS.SS.SS'
.b
	XXXX___32 16.ROA.US
.br
	A.US__.IO0
.br
	" *** BIG INTEGER IN Y
.br
	A.US__A.US,8589934592 .NG8589934592 8589934592 .NG8589934592
.br
	Y__4.ROA.US
.br
	A.US__.IO0
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	_.LD.LDRANK__300.ROA.US
.br
	A.US__.IO0
.br
	A.US__A.US,2
.br
	YY__.LD.LDRANK.ROA.US
.br
	_.BXSINK__.BXEX 2 6.RO 'A.US    .LD.LDRANK'
.br
	)SAVE
.le;Using TEST0.W2V as input to VAX APL produces the workspace 
TEST0.APL.  Note that TEST0.W2V is a /KEY file.
.b
		)IN TEST0.W2V/KEY
.br
		" BUILDING TEST0,W2V [4,244]/AS 1983 9 27 12 26 53 675
.br
		)CLEAR
.br
	CLEAR WS
.br
		" *** '[4,244]' REPLACED BY 'APL000:' IN WSID
.br
		)WSID APL000:TEST0
.br
	WAS CLEAR WS
.br
		)COPY APLT2V:SF2VX3
.br
	SAVED 26-SEP-1983 14:19:57 42 BLKS
.br
		" *** 'FOO,ADA [4,244]/DA' REPLACED BY 'APL001:FOO,ADA /DA' ON CHANNEL 1
.br
		_.LD.USASS ' 1 APL001:FOO.ADA /DA'
.br
	1
.br
		" *** 'TWO,AAS [4,244]/AS' REPLACED BY 'APL002:TWO,AAS /AS' ON CHANNEL 2
.br
		_.LD.USASS ' 2 APL002:TWO.AAS /AS'
.br
	2
.br
		" *** 'DEV:FOUR,AIS [4,244]/IS' REPLACED BY 'APL004:FOUR,AIS /IS' ON CHANNEL 4
.br
		_.LD.USASS ' 4 APL004:FOUR.AIS /IS'
.br
	4
.br
		" *** 'DEV:SIX,ADA [4,4]/DA' REPLACED BY 'APL006:SIX,ADA /DA' ON CHANNEL 6
.br
		_.LD.USASS ' 6 APL006:SIX.ADA /DA'
.br
	6
.br	
		" *** 'EIGHT,ABI [4,4]/BS' REPLACED BY 'APL008:EIGHT,ABI /BS' ON CHANNEL 8
.br
		_.LD.USASS ' 8 APL008:EIGHT.ABI /BS'
.br
	_.BXASS FILE SPEC CONTAINING /BS IS UNSUPPORTED
.br
		_.BXRESET
.br
		_.BXAUS__0
.br
		_.BXCT__0
.br
		_.BXGAG__0
.br
		_.BXIO__0
.br
		_.BXPP__10
.br
		_.BXPW__79
.br
		_.BXRL__0
.br
		_.BXTIMELIMIT__0
.br
		A.US__''
.br
		A.US__A.US,'.BX:<cr><lf>######'
.br
		_.BXSF__10.ROA.US
.br
		A.US__''
.br
		A.US__A.US,'HI THERE - THIS IS .BXTRAP'
.br
		_.BXTRAP__24.ROA.US
.br
		A.US__''
.br
		_.BXLX__0.ROA.US
.br
		A.US__''
.br
		A.US__A.US,')GROUP G1 A       BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB C '
.br
		_.XQ A.US
.br
		A.US_''
.br
		A.US__A.US,')GROUP G2 XXXXXXXXXXXXXXXXXXXXXXXXXXXXX   Y       ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ    '
.br
		A.US__A.US,'      AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA                                                '
.br
		A.US__A.US,'  '
.br
		_.XQ A.US
.br
		A.US__''
.br
		A.US__A.US,'R__DUPSOUT X                    <cr><lf>'
.br
		A.US__A.US,'"REMOVES DUPLICATES FROM VECTOR <cr><lf>'
.br
		A.US__A.US,'R__((.IO.ROX)=X.IOX)/X__,X              <cr><lf>'
.br
		A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	DUPSOUT
.b
		A.US__''
.br
		A.US__A.US,'ERROR<cr><lf>'
.br
		A.US__A.US,'L:1   <cr><lf>'
.br
		A.US__A.US,'L:2   <cr><lf>'
.br
		A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	2
.br
	##6#LABEL ERROR (DUPLICATE LABEL)
.br
	L:2
.br
	_^
.br
		A.US__''
.br
		A.US__A.US,'Z__A F B;T;.BXIO<cr><lf>'
.br
		A.US__A.US,'L:1                              <cr><lf>'
.br
		A.US__A.US,'''1 2 3 4 5 6 7 8 9 0 + # .DM''      <cr><lf>'
.br
		A.US_A.US,'''.DD .NG < .LE = .GE > .NE _& .OR - % $''      <cr><lf>'
.br
		A.US__A.US,'''Q W E R T Y U I O P __ .GO''        <cr><lf>'
.br
		A.US__A.US,'''? .OM .EP .RO ~ _^ .DA .IO .LO * { }''        <cr><lf>'
.br
		A.US__A.US,'''A S D F G H J K L ( ) .RK''        <cr><lf>'
.br
		A.US__A.US,'''.AL .CE .FL .US .DL .LD .SO '''' .BX [ ] .LK''       <cr><lf>'
.br
		A.US__A.US,'''Z X C V B N M , . /''            <cr><lf>'
.br
		A.US__A.US,'''LEFT .LU RIGHT .RU .DU .UU .DE .EN | ; : _\'' <cr><lf>'
.br
		A.US__A.US,'''.ZA .ZB .ZC .ZD .ZE .ZF .ZG .ZH .ZI .ZJ .ZK .ZL .ZM''      <cr><lf>'
.br
		A.US__A.US,'''.ZN .ZO .ZP .ZQ .ZR .ZS .ZT .ZU .ZV .ZW .ZX .ZY .ZZ''      <cr><lf>'
.br
		A.US__A.US,'''.UD ! " .IB .XQ .FM .DQ .IQ .OQ .QQ .QD .GU .GD .PD''    <cr><lf>'
.br
		A.US__A.US,'''.NR .NN .LG .RV .TR .CR .CS .CB''                <cr><lf>'
.br
		A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	F
.b
		A.US__''
.br
		'2 QUAD NAMES WERE REMOVED FROM THE HEADER OF FF'
.br
	2 QUAD NAMES WERE REMOVED FROM THE HEADER OF FF
.br
		A.US__A.US,'FF;.BXIO<cr><lf>'
.br
		A.US__A.US,' .LD.USOM ''.OM''       <cr><lf>'
.br
		A.US__A.US,'A .LD.USAB ''|''      <cr><lf>'
.br
		A.US__A.US,' .LD.USIB ''.IB''       <cr><lf>'
.br
		A.US__A.US,'.BXSINK__ .LD.USAV    <cr><lf>'
.br
		A.US__A.US,'''$'' .BXFMT ''$''    <cr><lf>'
.br	
		A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	FF
.b
		'ASSIGNMENTS TO THE FOLLOWING QUAD NAMES WERE REPLACED WITH QUAD SINK IN FF
.br
	AV 
.br     
	'
.br
	ASSIGNMENTS TO THE FOLLOWING QUAD NAMES WERE REPLACED WITH QUAD SINK IN FF
.br
	AV 
.b  
		'THE FOLLOWING PRIMITIVE FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	|.OM.IB$
.br
	'
.br
	THE FOLLOWING PRIMITIVE FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	|.OM.IB$
.b
		'THE FOLLOWING SYSTEM FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	AV 
.br    
	'
.br
	THE FOLLOWING SYSTEM FUNCTIONS WERE REPLACED WITH USER FUNCTIONS IN FF
.br
	AV 
.b
		A.US__''
.br
		A.US__A.US,'HOWDUPSOUT                                                          <cr><lf>'
.br
		A.US__A.US,'''THIS FUNCTION RETURNS A VECTOR FORMED BY TAKING THE RIGHT ARGUMENT'' <cr><lf>'
.br
		A.US__A.US,'''AND REMOVING DUPLICATES FROM IT.''                                   <cr><lf>'
.br
		A.US__A.US,'''THE RIGHT ARGUMENT MAY BE A NUMERIC OR CHARACTER SCALAR OR VECTOR.'' <cr><lf>'
.br
		A.US__A.US,''' ''                                                                  <cr><lf>'
.br
		A.US__A.US,''' ....................TRY.......''                                    <cr><lf>'
.br
		A.US__A.US,'''.................................RO.BX__DUPSOUT .IO12''                     <cr><lf>'
.br
		A.US__A.US,'''.................................RO.BX__DUPSOUT 12.RO .IO3 ''                 <cr><lf>'
.br
		A.US__A.US,'''NOTE THAT SCALARS BECOME VECTORS OF LENGHT 1''                       <cr><lf>'
.br
		A.US__A.US,'''                                   .RO.BX__DUPSOUT 1''                    <cr><lf>'
.br
		A.US__A.US,'3 1 .RO'' ''                                                             <cr><lf>'
.br
		A.US__.BX__.BXFX .BXBOX A.US .DM (0=1_^0.RO A.US)/.BXERROR
.br
	HOWDUPSOUT
.b
		" *** LOCKED LOCKED
.br
		A.US__.IO0
.br
		A.US__A.US,0 1 2 3 4 5 6 7 8 9
.br
		A.US__A.US,10 11 12 13 14 15 16 17 18 19
.br
		A.US__A.US,20 21 22 23 24 25 26 27 28 29
.br
		A.US__A.US,30 31 32 33 34 35 36 37 38 39
.br
		A.US__A.US,40 41 42 43 44 45 46 47 48 49
.br
		A.US__A.US,50 51 52 53 54 55 56 57 58 59
.br
		A.US__A.US,60 61 62 63 64 65 66 67 68 69
.br
		A.US__A.US,70 71 72 73 74 75 76 77 78 79
.br
		A.US__A.US,80 81 82 83 84 85 86 87 88 89
.br
		A.US__A.US,90 91 92 93 94 95 96 97 98 99
.br
		X__100.ROA.US
.br
		A.US__.IO0
.br
		A.US__A.US,0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5
.br
		A.US__A.US,9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5
.br
		A.US__A.US,18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5
.br
		A.US__A.US,27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5 35.5
.br
		A.US__A.US,36.5 37.5 38.5 39.5 40.5 41.5 42.5 43.5 44.5
.br
		A.US__A.US,45.5 46.5 47.5 48.5 49.5 50.5 51.5 52.5 53.5
.br
		A.US__A.US,54.5 55.5 56.5 57.5 58.5 59.5 60.5 61.5 62.5
.br
		A.US__A.US,63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71.5
.br
		A.US__A.US,72.5 73.5 74.5 75.5 76.5 77.5 78.5 79.5 80.5
.br
		A.US__A.US,81.5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5
.br
		A.US__A.US,90.5 91.5 92.5 93.5 94.5 95.5 96.5 97.5 98.5
.br
		A.US__A.US,99.5
.br
		XX__100.ROA.US
.br
		A.US__.IO0
.br
		A.US__A.US,1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0#<wrap>
.br
	0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1#<wrap>
.br
	1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1
.br
		A.US__A.US,1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0#<wrap>
.br
	0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1
.br
		XXX__200.ROA.US
.br
		A.US__''
.b
		A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS!.RV.TR.IB.QQ.LG.NN.NR".GU.GD.CR.CS#<wrap>
.br
	_.CB.SS.PD.QD.IQ.OQ.DQ$.CO.XQ.FM.SS.SS.SS.SS.SS.SS.DD_<.LE.GE_>?.OM.EP.RO_^.DA.IO.AL.CE.FL()[].LU.RU.UU#<wrap>
.br
	_.US.SS.SS.SS__.GO.BX.NE=.DU.DE_&'
.b
		A.US__A.US,'.OR~/\*_#%+-.LO|;,.SO.EN.DL:''[email protected]@.CO.LK.CO.CO.CO.DM{#<wrap>
.br
	_.RK}.CO.CO.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.SS.SS.SS'
.b
		A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS'
.b
		A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.WN.KA.KB.KC.KD.KE.KF.KG.CC.KI.KJ.KK.KL#<wrap>
.br
	_.KM.KN.KO.KP.KQ.KR.KS.KT.KU.KV.KW.KX.KY.KZ.WE.WF.WG.WR.WU.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS0123456789.SS.SS.SS.SS.SS'
.b
		A.US__A.US,'.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS.SS#<wrap>
.br
	_.SS.SS.SS.LDABCDEFGHIJKLMNOPQRSTUVWXYZ.SS !.QU.PS$.PC.AP''()*+,-./01'
.b
		A.US__A.US,'23456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]_^__`abcdefghijklmnopqrstuvwxyz{|}~.WD.SS.SS'
.b
		A.US__A.US,'.SS.SS.UD.ZA.ZB.ZC.ZD.ZE.ZF.ZG.ZH.ZI.ZJ.ZK.ZL.ZM.ZN.ZO.ZP.ZQ.ZR.ZS.ZT.ZU.ZV.ZW.ZX.ZY.ZZ#<wrap>
.br
	.SS.SS.SS.SS.SS'
.b
		XXXX__32 16.ROA.US
.br
		_.BXSINK_.BXEX 2 6.RO 'A.US####.LD.LDRANK'
.br
		)SAVE
.br
	27-SEP-1983 13:01:49 62 BLKS
.els
.rm 75
3a.  The user runs ASDRIVER in APLT2V:SF2VX4 on DSK:A.AAS.
.ls 1,"o"
.le;A.AAS is created in TTY character set with []PW == 80 via the 
following statements:
.b
	[1]  (.IO10) .OQ[2] chan
.br
	[2]  (3 4.RO'ABCD') .OQ[2] chan
.br
	[3]  (4 .RO .FL 2*33) .OQ[2] chan
.br
	[4]  (5 5.RO 0 1 0 1 0) .OQ[2] chan
.le;ASDRIVER runs under APLSF, producing messages.  Note that
ASDRIVER is dyadic.
.b
	#1##ASDRIVER 'A,AAS'
.br
	" BUILDING A,A2V [4,244]/AS 1983 9 14 12 22 31 440
.br
	" ALL DONE WITH INPUT FILE:  A,AAS /AS
.le;DSK:A.A2V is a VAX APL )INPUT script that reconstructs A.AAS
on the VAX.
.b
	" BUILDING A,A2V [4,244]/AS 1983 9 27 11 2 41 882
.br
	WS.USCHAN__.BXASS 'A.AAS/AS'
.br
	A.US__''
.br
	A.US__A.US,'1 2 3 4 5 6 7 8 9 10'
.br
	RECORD__20.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,'ABCD'
.br
	RECORD__4.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,'ABCD'
.br
	RECORD__4.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,'ABCD'
.br
	RECORD__4.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,'8589934592 8589934592 8589934592 8589934592'
.br
	RECORD__43.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,' 0 1 0 1 0'
.br
	RECORD__10.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,' 1 0 1 0 1'
.br
	RECORD__10.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,' 0 1 0 1 0'
.br
	RECORD__10.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,' 1 0 1 0 1'
.br
	RECORD__10.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,' 0 1 0 1 0'
.br
	RECORD__10.ROA.US
.br
	RECORD.OQ[3]WS.USCHAN
.br
	.BXDAS WS.USCHAN
.br
	" ALL DONE WITH INPUT FILE:  A,AAS /AS
.els
3b.  The user runs ISDRIVER in APLT2V:SF2VX4 on WRK:A.AIS.
.ls 1,"o"
.le;A.AIS is constructed via the following statements:
.b
	[1] (.IO10) .OQ chan
.br
	[2] (3 4.RO'ABCD') .OQ chan
.br
	[3] (4 .RO .FL 2*33) .OQ chan
.br
	[4] (5 5.RO 0 1 0 1 0) .OQ chan
.br
	[5] ((300 .RO 1).RO.NG77).OQ chan
.b
.le;ISDRIVER runs under APLSF, producing messages.  Note that
APL002: must be defined on the VAX for A.I2V to work there.
.b
		####ISDRIVER 'WRK:A,AIS'
.br
	" BUILDING A,I2V [4,244]/AS 1983 9 14 12 22 31 440
.br
	" *** 'WRK:' REPLACED BY 'APL002:'
.br
	" *** BIG INTEGER IN RECORD
.br
	" ALL DONE WITH INPUT FILE:  WRK:A,AIS /IS
.b
.le;DSK:A.I2V is a VAX APL )INPUT script that reconstructs A.AIS on
the VAX.  APL002: must be defined on the VAX for A.I2V to work there.
.b
	" BUILDING A,I2V [4,244]/AS 1983 9 27 11 2 44 572
.br	
	" *** 'WRK:' REPLACED BY 'APL002:'
.br
	WS.USCHAN__.BXASS 'APL002:A.AIS/IS'
.br
	A.US__.IO0
.br
	A.US__A.US,1 2 3 4 5 6 7 8 9 10
.br
	RECORD__10.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,'ABCDABCDABCD'
.br
	RECORD__3 4.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	A.US__.IO0
.br
	" *** BIG INTEGER IN RECORD
.br
	A.US__A.US,8589934592 8589934592 8589934592 8589934592
.br
	RECORD__4.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	A.US__.IO0
.br
	A.US__A.US,0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
.br
	RECORD__5 5.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	A.US__.IO0
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	A.US__A.US,1 1 1 1 1 1 1 1 1 1
.br
	_.LD.LDRANK__300.ROA.US
.br
	A.US__.IO0
.br
	A.US__A.US,.NG77
.br
	RECORD__.LD.LDRANK.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	.BXDAS WS.USCHAN
.br
	" ALL DONE WITH INPUT FILE:  WRK:A,AIS /IS
.els
3c. The user runs BSDRIVER in APLT2V:SF2VX4 on A.ABI[4,244].
.ls 1,"o"
.le;A.ABI was constructed via the following statements:
.b
	[1] (.IO10) .OQ chan, 1
.br
	[2] (3 4.RO'ABCD') .OQ chan, 1
.br
	[3] (4 .RO .FL 2*33) .OQ chan, 1
.br
	[4] (5 5.RO 0 1 0 1 0) .OQ chan, 1
.b
.le;BSDRIVER runs under APLSF, producing messages.  Note that
APL003: must be defined on the VAX for A.B2V to work there.
.b
		####BSDRIVER 'A,ABI[4,244]'
.br
	" BUILDING A,B2V [4,244]/AS 1983 9 14 12 22 31 440
.br
	" *** '[4,244]' REPLACED BY 'APL003:'
.br
	" *** BIG INTEGER IN RECORD
.br
	" ALL DONE WITH INPUT FILE:  A,ABI[4,244] /BS
.b
.le;DSK:A.B2V is a VAX APL )INPUT script that reconstructs A.ABI
as a /IS file on the VAX (since /BS files do not exist in VAX APL).
APL003: must be defined on the VAX for A.B2V to work there.
.b
	" BUILDING A,B2V [4,244]/AS 1983 9 27 11 2 46 285
.br
	" *** '[4,244]' REPLACED BY 'APL003:'
.br
	WS.USCHAN__.BXASS 'APL003:A.ABI/IS'
.br
	A.US__.IO0
.br
	A.US__A.US,1 2 3 4 5 6 7 8 9 10
.br
	RECORD__10.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,'ABCDABCDABCD'
.br
	RECORD__3 4.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	A.US__.IO0
.br
	" *** BIG INTEGER IN RECORD
.br
	A.US__A.US,8589934592 8589934592 8589934592 8589934592
.br
	RECORD__4.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	A.US__.IO0
.br
	A.US__A.US,0 1 0 1 0 0 1 0 1 0 0 1 0 1 0 0 1 0 1 0 0 1 0 1 0
.br
	RECORD__5 5.ROA.US
.br
	RECORD.OQWS.USCHAN
.br
	.BXDAS WS.USCHAN
.br
	" ALL DONE WITH INPUT FILE:  A,ABI[4,244] /BS
.els
3d. The users runs DADRIVER in APLT2V:SF2VX4 on WRK:A.ADA[4,244].
.ls 1,"o"
.le;A.ADA was constructed via the following statements:
.b
	[0] )CREATE 100 A.ADA
.br
	[1] (.IO10) .OQ[1] chan
.br
	[2] (3 4.RO'ABCD') .OQ[2] chan
.br
	[3] (4 .RO .FL 2*33) .OQ[3] chan
.br
	[4] (5 5.RO 0 1 0 1 0) .OQ[4] chan
.b
.le;DADRIVER runs under APLSF, producing messages.  Note that
APL004: must be defined on the VAX for A.D2V to work there.
.b
		####DADRIVER 'WRK:A,ADA[4,244]'
.br
	" BUILDING A,D2V [4,244]/AS 1983 9 14 12 22 28 949
.br
	" *** 'WRK:[4,244]' REPLACED BY 'APL004:'
.br
	" *** BIG INTEGER IN RECORD
.br
	" ALL DONE WITH INPUT FILE:  WRK:A,ADA[4,244] /DA
.b
.le;DSK:A.D2V is a VAX APL )INPUT script that reconstructs A.ADA on
the VAX.  APL004: must be defined on the VAX for A.B2V to work there.
.b
	" BUILDING A,D2V [4,244]/AS 1983 9 27 11 2 48 105
.br
	" *** 'WRK:[4,244]' REPLACED BY 'APL004:'
.br
	WS.USCHAN__.BXASS 'APL004:A.ADA/DA'
.br
	A.US__.IO0
.br
	A.US__A.US,1 2 3 4 5 6 7 8 9 10
.br
	RECORD__10.ROA.US
.br
	RECORD .OQ[1] WS.USCHAN
.br
	A.US__''
.br
	A.US__A.US,'ABCDABCDABCD'
.br
	RECORD__3 4.ROA.US
.br
	RECORD .OQ[2] WS.USCHAN
.br
	A.US__.IO0
.br
	" *** BIG INTEGER IN RECORD
.br
	A.US__A.US,8589934592 8589934592 8589934592 8589934592
.br
	RECORD__4.ROA.US
.br
	RECORD .OQ[3] WS.USCHAN
.br
	A.US__.IO0
.br
	A.US__A.US,0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
.br
	RECORD__5 5.ROA.US
.br
	RECORD .OQ[4] WS.USCHAN
.br
	.BXDAS WS.USCHAN
.br
	" ALL DONE WITH INPUT FILE:  WRK:A,ADA[4,244] /DA
.els
.le;The text files created by each DRIVER are moved from the -20 to the VAX
by some means.  Facilities for moving files are not part of this 
migration tool.
The user could, for example, use DECnet file transfer or ANSI labeled 
magnetic tape.
.le;Once the text files reside on the VAX, the SUBMIT function in the VAX
APL workspace, SF2VX5.APL, can be used to create a command procedure that
processes each text file as a )INPUT (/KEY) file to VAX APL.
.ls 1,"o"
.le;The following files reside in the default directory:
.b;.ts11,17,28
		A.A2V		text image of A.AAS on the -20
.br
		A.B2V		text image of A.ABI on the -20
.br
		A.D2V		text image of A.ADA on the -20
.br
		A.I2V		text image of A.AIS on the -20
.br
		TEST0.W2V	text image of TEST0.APL on the -20
.le;SUBMIT in SF2VX5.APL runs on the following text files:
.b;.rm 130
		)LOAD SF2VX5
.br
	SAVED 28-SEP-1983 10:48:06 50 BLKS
.br
		SUBMIT
.br
	ENTER FILE NAMES TO BE INCLUDED :[*.*;*] X:A.%2V
.b
	BUILDING DCL FILE SUB006.COM *** 
.b
	$! INCLUDING  APLD$:[USER]A.A2V;1
.b
	THE LOGICAL APL003 NEEDS TO BE DEFINED FOR FILE APLD$:[USER]A.B2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] <cr>
.br
	$! INCLUDING  APLD$:[USER]A.B2V;1
.b
	THE LOGICAL APL004 NEEDS TO BE DEFINED FOR FILE APLD$:[USER]A.D2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] USRD$:[USER]
.br
	THE LOGICAL APL004 WILL BE DEFINED AS USRD$:[USER]
.br
	$! INCLUDING  APLD$:[USER]A.D2V;1
.b
	THE LOGICAL APL002 NEEDS TO BE DEFINED FOR FILE APLD$:[USER]A.I2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] <cr>
.br
	$! INCLUDING  APLD$:[USER]A.I2V;1
.b
	DCL FILE SUB006.COM  COMPLETED *** 
.br
		SUBMIT
.br
	ENTER FILE NAMES TO BE INCLUDED :[*.*;*] TEST0.W2V
.b
	BUILDING DCL FILE SUB007.COM *** 
.b 
	THE LOGICAL APL000 NEEDS TO BE DEFINED FOR FILE USRD$:[USER.APL]TEST0.W2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] USRD$:[USER]
.br
	THE LOGICAL APL000 WILL BE DEFINED AS USRD$:[USER]
.br
	THE LOGICAL APL001 NEEDS TO BE DEFINED FOR FILE USRD$:[USER.APL]TEST0.W2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] <cr>
.br
	THE LOGICAL APL002 NEEDS TO BE DEFINED FOR FILE USRD$:[USER.APL]TEST0.W2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] <cr>
.br
	THE LOGICAL APL004 NEEDS TO BE DEFINED FOR FILE USRD$:[USER.APL]TEST0.W2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] <cr>
.br
	THE LOGICAL APL006 NEEDS TO BE DEFINED FOR FILE USRD$:[USER.APL]TEST0.W2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] <cr>
.br
	THE LOGICAL APL008 NEEDS TO BE DEFINED FOR FILE USRD$:[USER.APL]TEST0.W2V;1
.br
	EQUIVALENCE NAME?:[<CR> IF NONE ] <cr>
.br
	$! INCLUDING  USRD$:[USER.APL]TEST0.W2V;1
.b 
	DCL FILE SUB007.COM  COMPLETED *** 
.br
		)OFF
.rm 75
.le;The command files built by SUBMIT can be run indirectly or in batch.
The text file is processed by VAX APL and the file being migrated is created.
Note that answering "<cr>"  to the request to define a logical name leaves
the logical name as previously defined, either by a previous request in this
SUBMIT execution or by the user externally to SUBMIT.
.b
SUB006.COM built in the previous step looks like the following:
.b
	$! BUILDING SUB006.COM/AS 1983 9 28 16 3 54 490
.br
	$SET NOON
.br
	$! INCLUDING  APLD$:[USER]A.A2V;1
.br
	$ APL/TERM=TTY/NOSILENT
.br
	)OUTPUT SYS$OUTPUT:/TTY
.br
	)MAXCORE 1500
.br
	)INPUT APLD$:[USER]A.A2V;1/KEY
.br
	)OFF HOLD
.br
	$! 
.br  
	$! INCLUDING  APLD$:[USER]A.B2V;1
.br
	$ APL/TERM=TTY/NOSILENT
.br
	)OUTPUT SYS$OUTPUT:/TTY
.br
	)MAXCORE 1500
.br
	)INPUT APLD$:[USER]A.B2V;1/KEY
.br
	)OFF HOLD
.br
	$! 
.br  
	$! INCLUDING  APLD$:[USER]A.D2V;1
.br
	$ DEFINE APL004 USRD$:[USER]
.br
	$ APL/TERM=TTY/NOSILENT
.br
	)OUTPUT SYS$OUTPUT:/TTY
.br
	)MAXCORE 1500
.br
	)INPUT APLD$:[USER]A.D2V;1/KEY
.br
	)OFF HOLD
.br
	$! 
.br  
	$! INCLUDING  APLD$:[USER]A.I2V;1
.br
	$ APL/TERM=TTY/NOSILENT
.br
	)OUTPUT SYS$OUTPUT:/TTY
.br
	)MAXCORE 1500
.br
	)INPUT APLD$:[USER]A.I2V;1/KEY
.br
	)OFF HOLD
.br
	$!   
.b2
SUB007.COM built in the previous step looks like the following:
.b
	$! BUILDING SUB007.COM/AS 1983 9 28 16 4 54 780
.br
	$SET NOON
.br
	$! INCLUDING  APLD$:[USER]TEST0.W2V;1
.br
	$ DEFINE APL000 USRD$:[USER]
.br
	$ APL/TERM=TTY/NOSILENT
.br
	)OUTPUT SYS$OUTPUT:/TTY
.br
	)MAXCORE 1500
.br
	)INPUT APLD$:[USER]TEST0.W2V;1/KEY
.br
	)OFF HOLD
.br
	$!   
.els
.rm75;.ps58,75
.hl1 ^&incompatibilites\&
Incompatibilities exist between APLSF and VAX APL. The 
action that the migration tool takes on each of these 
incompatibilties is listed below.  "SFTOVX takes no action" means
that the migration tool does not identify the incompatibility, nor does 
SFTOVX replace it to simulate APLSF behavior.  Any transformations done by the
migration tool are reported to the user when the tool runs.  
.nt
These transformations do not take place within quoted 
literals.
.en
.ls,"o"
.le;Escape mode does not exist in VAX APL.
.b
"@" on input to VAX APL in TTY mode will remain an "@".  "@R",
for example, are not translated to .RO.
.b
SFTOVX takes no action.
.b
.le;Tabs in data and in files will remain as tabs.  They
are not converted to spaces in VAX APL.
.b
.le;_.Z@ is not recognized by VAX APL as the character underscored delta.
.b
SFTOVX takes no action on .Z@.  Underscored delta is output in APL 
characters by the migration tool.  In VAX APL, .UD is underscored 
delta.
.b
.le;In APLSF, .RU is a "U" with the feet pointing to the right;  .LU 
is a "U" with the feet pointing to the left.  In VAX APL, .RU is a "U"
with the feet pointing to the left and .LU is a "U" with the feet
pointing to the right (in other words, the directions of the feet are
opposite what they are in APLSF).
.b
SFTOVX will output the "U" with the feet pointing to the right as "left U" 
(.LU) and the "U" with the feet pointing to the left as "right U" 
(.RU). The APL graphic from APLSF will be the same as the APL graphic 
inside VAX APL.
.b
.le;Dyadic $ is not supported in VAX APL.
.b
SFTOVX converts a $ primitive function to .BXFMT.
.b
.le;Monadic .EN, .DE and .OM are not supported in VAX APL.
.b
SFTOVX converts the primitive functions .EN, .DE, and .OM
to the user-defined (DEC-provided) functions .LD.USEN, .LD.USDE, and
_.LD.USOM which simulate their behavior under APLSF.
.b
.le;If A is an integer in A/B in APLSF, it is an error.  In VAX APL,
it is the function replicate.
.b
SFTOVX takes no action.
.b
.le;Both monadic and dyadic .DQ are fuzzy in VAX APL but not in APLSF.
.b
SFTOVX replaces the primitive function .DQ with .LD.USDQ,
which sets .BXCT to 0.22204460E.NG15, APLSF's internal value for 
singularity testing (established in APLSF v2 in edit 257) before 
executing .DQ.
.b
.le;Dyadic .AB is fuzzy in VAX APL but not in APLSF.
.b
SFTOVX replaces the primitive function .AB with .LD.USAB,
which sets the local .BXCT to 0 if invoked dyadically.
.b
.le;Floor and Ceiling apply .BXCT differently in VAX APL than in APLSF.
.b
SFTOVX takes no action.
.b
.le;A negative number raised to a non-integer power by means of dyadic * is 
an error in VAX APL;  it gives an answer in APLSF.
.b
SFTOVX takes no action.
.b
.le;Output from .FM format is different in VAX APL.
.b
SFTOVX takes no action.
.b
.le;VAX APL uses .BXCT of "absolute fuzz" to test for a near-integer.
.b
SFTOVX takes no action.
.b
.le;Monadic transpose of a scalar is a vector in APLSF;  it is a scalar
in VAX APL.
.b
SFTOVX takes no action.
.b
.le;Monadic and dyadic ! (Beta and Gamma functions) give different, more 
accurate answers in VAX APL than in APLSF.
.b
SFTOVX takes no action.
.b
.le;I-beams do not exist on the VAX.
.b
SFTOVX replaces the primitive function .IB with .LD.USIB, which
simulates most of the documented I-beams and none of the
undocumented ones:
.els
.b;.ts9,43;.nf;.nj;.rm75
	17  symbol table size, entries		not simulated
	18  condition of the ws		always return 0 == ok
	19  keying time		always return 0 == .BXAI[4]
	20  time of day in 60th seconds		simulated
	21  the CPU time in 60th seconds		simulated
	22  WS available in words		return .BXWA _% 4
	23  system job number		return .BXUL
	24  APL sign-on time in 60th seconds
	    since midnight		something like .bxAI[3]
	25  current date		.BXTS[2 3 1] reformatted
	26  current line number		returns 1_^1.DA.BXLC
	27  all line numbers		returns 1.DA.BXLC
	28  terminal character set		0 == APL;  1 == TTY
	29  user's ppn		return .BXAI[1]
	30  clear the SI stack		execute .BXRESET
	31  number of statements executed		get info from )CHARGE
	32  number of operations executed		get info from )CHARGE
	33  TOPS-10 only kilo-core seconds		return 0
.ls,"o"
.rm75;.b;.f;.j
.le;_.BXASCII is not supported in VAX APL.
.b
SFTOVX replaces .BXASCII with a niladic function .LD.USASCII,
which returns 128 VAX APL .BXAV codes that resemble ASCII.
.b
.le;_.BXAV is different in VAX APL than in APLSF.
.b
SFTOVX replaces .BXAV with a niladic function .LD.USAV,
which returns 512 VAX APL .BXAV codes that resemble .BXAV in
APLSF.  
.b
.le;_.BXRENAME may behave differently in VAX APL than it does in APLSF.
.b
SFTOVX replaces .BXRENAME with the user-defined function .LD.USRENAME 
which attempts to simulate the behavior of .BXRENAME in APLSF.
.b
.le;_.BXENQ, DEQ, MTP, APPEND and FCM are not in VAX APL.
.b
SFTOVX replaces these system names with user-defined functions,
for example, .LD.USENQ, which executes .BXBREAK '.BXENQ not supported
in VAX APL'.
.b
.le; In APLSF, certain system variables and all system functions can be 
localized in function headers or assigned to.  In VAX APL these system 
variables are niladic system functions so they cannot be localized or 
assigned to.
.b
The system names involved are the following:
.b;.ts20,27,34,41,48,56;.nj;.nf
	AV	ALPHA	ALPHAU	NUM	CTRL	LC
	AI	TS	TT	UL	WA
.b;.f;.j
SFTOVX removes these and all system function names from function header 
local lists.  It replaces assignment to them with assignment to 
'.BXSINK__'.  Therefore the only quad names allowed in locals lists are 
the following:
.b;.ts20,27,34,41,48;.nf;.nj
	AUS	IO	RL	CT	TIMELIMIT	
	SF	ERROR	PP	GAG	TIMEOUT
	PW	TRAP	LX
.b;.j;.f
.le;Several system commands in APLSF are not in VAX APL.
.b
The system commands involved are the following:
.ts20,27,34,58;.nf;.nj
	MODE	TABS	LIB and DROP switches	BLOT
	C	CALL	CREATE	ECHO
	R	RUN	SEAL	TIME
.b;.j;.f
For any of these to be used, they would have to be executed, either
with .XQ or .EP.  Note that .EP returns 0 21 .ro 0 and .XQ dies.
.b
SFTOVX takes no action.
.b
.le;In APLSF, the shape of the result of .EP')cmd' is a matrix of .BXPW columns
(if the result contains more than 1 row).  In VAX APL, the result is a 
vector with the rows delimited by CR-LF.
.b
SFTOVX takes no action.  Note that .BXBOX in VAX APL converts a 
vector of lines delimited by CR-LF into a matrix.
.b
.le;Passwords on workspaces and /DA files are spelled "-password" in
APLSF.  The syntax is "/PASSWORD=password" in VAX APL.
.b
Passwords may appear in )LOAD, )SAVE, )COPY, )PCOPY, .BXASS,
)CREATE, .BXQLD, .BXQCO, .BXQPC.
.b
SFTOVX replaces .BXQLD, .BXQPC, .BXQCO, and .BXASS with, for 
example,  .LD.USQLD 
which checks for a "-password" at run-time and change it to 
"/PASSWORD=password".  SFTOVX takes no action on the system commands.
.b
.le;_.BXTT returns different answers in VAX APL than in APLSF.
.b
SFTOVX replaces the .BXTT system variable with the niladic
user-defined function .LD.USTT.  This produces the following
results:
.b;.ts15,40;.nf;.nj
	if VAX APL .BXTT is	then .LD.USTT returns
.b
	2 == TTY	0 == TTY
	3 == GIGI	3 == KEY
	4 == LA	2 == LA or Tektronix
	5 == KEY	3 == KEY
	6 == BIT	4 == BIT
	8 == VT102-PA/RA	3 == KEY
	11 == Tektronix 4013	2 == LA or Tektronix
	12 == Tektronix 4015	2 == LA or Tektronix
.b;.f;.j
Note that VAX APL does not support TTYCOM, ONTEL or 2741 APL terminals,
     which APLSF does.
.b
.le;_.FM and $ both output "-" for negative numbers in TTY mode in
APLSF.  VAX APL outputs "-" only if .BXNG is 0.
.b
SFTOVX does not set .BXNG in the VAX APL workspace since it also 
affects .BXFI and .BXVI.
.b
.le;T.LDf and S.LDf set the trace and stop vectors in VAX APL.  These
names are valid identifiers in VAX APL.
.b
SFTOVX leaves these as identifiers; the trap and stop settings for 
user-defined functions are not transferred.
.b
.le;/BS, /BS* and /BU binary files are not supported in VAX APL.
.b
_.BXASS is replaced by .LD.USASS, which executes .BXBREAK if the
_.BXASS fails. .BXASS reports a "not supported" error message for the 
following facilities: passwords, [ppn], /BS, /DUMP.
.b
.le;_.BXCLS, DAS, CHS, DVC and FLS on .IO0 return information on all 
12 channels.
.b
SFTOVX replaces each of these system names with user-defined
functions.  For example, .LD.USCLS checks to see if its argument
is an empty vector:  if it is, it executes .BXCLS .BXCHANS
and returns .IO0 (these functions are not quiet in APLSF).  They 
also change channel numbers of the form 100+n to -n.
.b
.le;_.BXCIQ and COQ take different arguments and produce different
results in VAX APL than in APLSF.
.b
_.BXCIQ and COQ deal with internal representations, which are different
in the VAX than in APLSF.  Therefore SFTOVX replaces these system
names with user-defined functions.  For example, .LD.USCIQ executes
_.BXBREAK 'CIQ IN VAX APL INCOMPATIBLE WITH APLSF'.
.b
.le;A trailing "lamp" on output to the terminal suppresses the next CR-LF
in APLSF.  It is output simply as a trailing "lamp" in VAX APL.
.b
SFTOVX takes no action.
.b
.le;STOPSET can be trapped in VAX APL.  It cannot in APLSF.
.b
SFTOVX takes no action.
.b
.le;APLSF does very little shape-checking on indexed assignment.
.b
SFTOVX takes no action.
.b
.le;The character representation of a number can overflow on the
VAX. 
.b
Numbers are transferred as character strings with .BXPP set to 18.
Rounding may cause the string to be a number outside the range of 
allowable numbers in VAX APL.  A LIMIT ERROR is reported by VAX 
APL.
.b
SFTOVX takes no action. 
.b
.le;Some functions are quiet in VAX APL, but not in APLSF.
.b
The only function that is quiet that is not being transformed is
_.OQ.  This function cannot be replaced with a user-defined function 
because it takes an axis argument, which user-defined functions can't do.
.b
SFTOVX takes no action.
.le;_.BXGAG values in APLSF are reversed in VAX APL.
.b
SFTOVX takes no action.
.b
.le;Valid value sets for certain system variables are different in VAX 
APL than they are in APLSF.
.b;.lm12
.i-2
-  _.BXCT in an APLSF workspace is migrated to VAX APL as 2.328E.NG10 
even if it is larger than this value.
.b;.i-2
-  _.BXPP in an APLSF workspace is migrated to VAX APL as 16 even if it 
is larger than this value.
.b;.i-2
-  _.BXRL in an APLSF workspace is migrated to VAX APL as .NG1+2*31 
(2147483647).
.b;.i-2
-  _.BXTIMELIMIT in an APLSF workspace is converted from milliseconds 
to seconds and is migrated to VAX APL as 255 seconds even if 
_.BXTIMELIMIT is bigger than that value.
.b;.i-2
-  The internal null character (APLSF .BXAV [103]) is removed from 
_.BXLX in an APLSF workspace before it is migrated to VAX APL.
.b;.i-2
-  _.BXPW in an APLSF workspace is migrated to VAX APL as 35 even if
_.BXPW is smaller than that value.
.le;The integer range in APLSF is from -2*35 to .NG1+2*35. In VAXAPL, 
the integer range is from -2*31 to .NG1+2*31.  Any integer outside of 
the VAXAPL range will be stored as a floating point number under 
VAXAPL. The warning "BIG INTEGER IN name" is issued.  When using base and 
represent to pack small values into integers, the packing may not work
under VAXAPL.
.lm0
.els
.b4
.hl1 ^&error messages\&
.b2;.rm75
Error messages put out by the various pieces of SFTOVX:
.b
.ls,"o"
.le;MIGRATE in SF2VX0
.b;.ts7
	'MIG000,CTL THRU 999 IN USE'
.b
MIGRATE cannot find a file spec of the form
MIGnnn.CTL (where "nnn" is a 3 digit number) to use as
the batch control file it wants to build.  Execution
will be suspended at this point - the user can take
remedial action by getting rid of files named MIGnnn.CTL
on DSK: and then typing __.GO .BXLC + 1 to restart MIGRATE.
.b2
The functions MIGRATE and PERFORM in SF2VX0 do not set .BXTRAP, which implies
that software failures will display a message (only the 1st line
since )ECHO is OFF) and suspend execution at the line in error.
The user can then determine how to correct the failure.
.b2	
.le;DRIVER in SF2VX1
.b
	'SI NOT EMPTY'
.b
This is an informational message only.  The SI stack in the workspace being 
migrated contains suspended and/or pendent functions.  The workspace
will be transferred but local copies of functions and
variables will be dumped out to the input script.
.b2
DRIVER does not set .BXTRAP, which implies that software failures 
will display a message (only the 1st line since )ECHO is OFF) and 
suspend execution at the line in error.   The user can then determine 
how to correct the failure.
.b2
.le;The file drivers, ASDRIVER, BSDRIVER, ISDRIVER and DADRIVER in SF2VX4
.b
	'ERROR ASSIGNING INPUT FILE: name'
.b
		all four drivers display this error if the file is not found
.b
	'ERROR n READING FROM FILE name COMPONENT i'
.br
	'ERROR n READING FROM FILE name RECORD i'
.b
DADRIVER says COMPONENT;  all others say RECORD, where "n"
is an APLSF error number (see Appendix A in the ^&VAX APL REFERENCE 
MANUAL\&), "name" is the
file the driver is trying to read, and "i" is the record or
component number currently being read.
.b
This message is then followed by the 1st line of .BXERROR,
which will be the text for error "n".
.b
	  'ERROR 69 READING FROM FILE name,ADA COMPONENT 0
.br
	   FILE FORMAT NOT DIRECT ACCESS'
.b
	   'ERROR 70 READING FROM FILE name,ais RECORD 1
.br
	    FILE FORMAT NOT INTERNAL SEQUENTIAL'
.b
	Processing of the file stops when an error occurs and the output
	file (that is the VAX input script) being built is closed.
.b
.le;All drivers check numeric data for integer values that are outside 
the integer range in VAX APL.  The warning "BIG INTEGER IN name" means 
that such an integer was found in the variable name.
.b
.le;While MIGRATE is interacting with the user, recoverable errors 
(such as FILE NOT FOUND) are reported and the user is prompted for
alternate input. If the error is not recoverable, the function 
suspends so the user can diagnose the failure.
.b
.le;For functions that will most likely be executed in batch (for 
example,the drivers),  errors are reported and APLSF then suspends execution.
While running the control file built by MIGRATE from batch, the next command 
will be )OFF HOLD which returns the user
to the "@" prompt.  The user must examine the .LOG file from the batch 
job to see if the process was successful.  If the function is run 
interactively, suspending the function 	gives the user the chance to 
diagnose the problem.  Note that if a user-defined filter function is
unsuccessful, the user can debug it if it is being run interactively.
.els