  Validating user-specified date? (DCL) 
 The Question is:
 
How do I check a date to see if it is valid inside a DCL script?  I am trying
 to take in the date as a paramater and am then searching files for records of
 that date, but I want to ensure a valid date.
 
 
 The Answer is:
 
  Parse the user-specified date via one of the available DCL lexical
  functions.  eg: f$cvtime.  If the parse fails, then the user-specified
  date is not valid.
 
