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Annotation of 42BSD/usr.lib/learn/editor/L33.1a, revision 1.1

1.1     ! root        1: #print
        !             2: When you want to match one of a few specific characters, and not
        !             3: just any character, the pattern is similar to the pattern used
        !             4: in filenames.  The patterns used with the editor, by
        !             5: the way, are called "regular expressions".  The string
        !             6:    [abc]
        !             7: matches 'a', 'b' or 'c'.  So if the current line
        !             8: is
        !             9:    now is the time for all good men
        !            10: and the command is
        !            11:    s/t[ijk]/xx/
        !            12: what word is changed?  Type "answer WORD" where WORD is the
        !            13: word changed by that command.
        !            14: #copyin
        !            15: #user
        !            16: #uncopyin
        !            17: #match time
        !            18: #log
        !            19: #next
        !            20: 33.1b 10

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