Library /sys$common/syshlp/patchhelp.hlb HELP  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 The VAX/VMS Image File Patch Utility (PATCH) allows you to make changes
 to an image file in the form of patches.  You can then run the new version
 of the image without having to compile, assemble, or link the program source
 files.

 Use the HELP command to get additional information on the following
 PATCH commands:

   ALIGN      CANCEL     CHECK      CREATE     DEFINE     DELETE
   DEPOSIT    EVALUATE   EXAMINE    EXIT       expressions
   HELP       INSERT     mode       REPLACE    SET        SHOW
   UPDATE     VERIFY

 Format:

 	HELP topic [subtopic...]

 where topic specifies the name of the command for which you need
 help, and subtopic identifies a particular qualifier, parameter,
 or command keyword about which you want further information.