Trailing-Edge
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PDP-10 Archives
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decus_20tap5_198111
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decus/20-0146/keywrd.nfo
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KEYWRD, Word and Phrase Recognition Logic Generator
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Abstract: The KEYWRD program produces a sequence of tests
which can identify the leading word or the leading phrase
formed of a fixed sequence of words in a line of text
without ever having to test a character which has already
been identified. Such a leading word or phrase does not
need to include any characters to the right of the first of
the characters which uniquely identify the word or phrase.
The word or each of the words in a phrase can be abbreviated
by truncation, leaving at least the left character in each
word of a phrase if additional words or their abbreviations
appear to the right. Spaces are allowed between the words
in a phrase, but are not required. A single sequence of
tests is used to recognize the initial portions of words and
phrases which start with a common series of characters, then
the unique portion of each word or phrase is identified by a
separate sequence of tests. After the unique portion of
each word or phrase has been identified by the separate
sequence of tests, then a single sequence of tests is
similarly used to recognize the final portions of words and
phrases which end with a common series of characters.