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Annotation of 43BSD/usr.lib/learn/editor/L30.1a, revision 1.1

1.1     ! root        1: #print
        !             2: Although it is always possible to fix errors by retyping
        !             3: the entire erroneous line with the 'c' command, it is
        !             4: usually much faster to make small changes within
        !             5: a line.  The editor allows this with the 's' (substitute)
        !             6: command.  For example,
        !             7:    s/abc/def/
        !             8: will change a line previously reading
        !             9:    xxx abc
        !            10: into one reading
        !            11:    xxx def
        !            12: by replacing the string 'abc' in the line with the string 'def'.
        !            13: In this directory is a file 'pres' with one line that says
        !            14: 'harry' where it should say 'george'.  Fix it using the
        !            15: substitute command to change 'harry' into 'george'.  You
        !            16: should use the 'p' command to print the line before and
        !            17: after, checking that you did it correctly.  Then
        !            18: rewrite the file and type 'ready'.
        !            19: #create Ref
        !            20: george washington
        !            21: #create pres
        !            22: harry washington
        !            23: #user
        !            24: #cmp Ref pres
        !            25: #log
        !            26: #next
        !            27: 30.1b 10

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