An updated version of the file zap utility first released on disk number
10.  Can be used to patch any type of file.  Nice, and VERY useful.  

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 4224   12412  34.0% -lh5- 2869 Mar  2  1986 filezap/filezap.c
[generic]                 9525   21508  44.3% -lh5- 487e Mar  2  1986 filezap/filezap.lattice
[generic]                 5127   10580  48.5% -lh5- b163 Mar  2  1986 filezap/filezap.manx
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         3 files   18876   44500  42.4%            Mar  2  1987