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Trailing-Edge - PDP-10 Archives - BB-PBQUC-BM_1990 - help/ctrlf.hlp
There are no other files named ctrlf.hlp in the archive.
CTRL/F

Provides recognition input for file specifications and  command  names
and  arguments.   Similar  to the ESCAPE key, except that it completes
only one field at a time with file  specifications  and  it  does  not
supply guidewords with commands.