Why diff?

Have you ever had a new version of a program that had exactly the same
filelength as an older version? Have you ever asked yourself in such a
situation if that version couldn't be a fake one? If you want to check out
if somebody just zapped his name into the file, then DIFF is a program for 
you! (Written in  Amiga E)

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           IRC-Nick : Flynn
     E-Mail: eravauis1.vub.ac.be
WWW-page: http://dinf.vub.ac.be/~eravau
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 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 1572    2628  59.8% -lh5- e329 Apr 14  1995 Diff
[generic]                 1171    2226  52.6% -lh5- 743b Apr 14  1995 Diff.doc
[generic]                  236     468  50.4% -lh5- 2018 Jul  7  1994 Diff.doc.info
[generic]                 1138    2744  41.5% -lh5- 43b4 Apr 14  1995 Diff.e
[generic]                  226     461  49.0% -lh5- 2d5c Jul  7  1994 Diff.e.info
[generic]                  196     462  42.4% -lh5- b0e6 Jul  7  1994 Diff.info
[generic]                   76      91  83.5% -lh5- 62f1 Apr 14  1995 file_id.diz
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         7 files    4615    9080  50.8%            Apr 14  1995