Example

   CMS> DELETE HISTORY/BEFORE=TODAY "old history in HISTORY.DMP"
   Confirm DELETE HISTORY/BEFORE=10-MAY-1988 [Y/N] (N): y
   %CMS-S-HISTDEL, 89 history records deleted

     This example deletes all of the library history prior to
     the current day. The following shows the first few records
     contained in the HISTORY.DMP file:

         Deleted dump for CMS Library DISKX:[PROJECT.CMSLIB]

           6-MAR-1988 17:07:50 SNAKE  CREATE ELEMENT OUTPUT.FOR 
                 "ASCII format"
           6-MAR-1988 17:26:10 MARTIN CREATE ELEMENT INIT.FOR 
                 "init routines"
           8-MAR-1988 12:33:09 LISA   RESERVE INIT.FOR(1) "change 
                 header offset"
           9-MAR-1988 17:34:04 LISA   REPLACE INIT.FOR(2) "header 
                 offset and additional free space added"
             .
             .
             .

     The CREATE LIBRARY transaction is not deleted from the library
     history.