VMS Help PASCAL, Predeclared Routines, Dyn Alloc, DISPOSE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The DISPOSE procedure deallocates memory for a dynamic variable.

  Syntax:

     DISPOSE( p )

  The parameter 'p' is a pointer variable.  The 't' parameters are
  constant  expressions that match the corresponding 't' parameter
  used in the call to the NEW procedure that allocated the memory.
  If you use 't' parameters in a call to NEW, you must specify the
  same 't' parameters in the call to DISPOSE.   If  you  allocated
  memory  using d parameters, just specify the pointer variable to
  the corresponding DISPOSE call.

  The DISPOSE  procedure  deallocates  the  object  to  which  the
  pointer variable points.  You cannot call DISPOSE more than once
  for the same dynamic variable.