Small 'Rotate-13' tool for OS 2.x or better. Uses 'dos.library' functions and
standard I/O streams for minimal size (which was the goal I had in mind). Call
it with "rot13 <foo >bar" or in a similar way. Please note that 'rot13' is pure,
you can make it resident. SAS/C source included.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  508     508 100.0% -lh0- bacc Oct 28  1995 rot13/rot13
[generic]                 1182    2620  45.1% -lh5- aa18 Oct 28  1995 rot13/rot13.c
[generic]                   79     118  66.9% -lh5- 3259 Oct 28  1995 rot13/SCOPTIONS
[generic]                  171     212  80.7% -lh5- 94e8 Oct 28  1995 rot13/SMAKEFILE
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         4 files    1940    3458  56.1%            Oct 30  1995