VMS Help DTM, MODIFY, VARIABLE, Command Qualifiers, /REMARK  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   /REMARK="string"
   /NOREMARK

   Determines whether to replace or remove the existing remark.

   The /REMARK qualifier replaces any existing remark with the
   specified remark. The /NOREMARK qualifier removes the remark
   string from the variable, leaving the remark field value null.