VMS Help PASCAL, Predeclared Routines, Null String, PAS_STR  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The PAS_STR function  returns  a  Pascal  string  value  from  a
  C_STR_T value.

  Syntax:

     PAS_STR(e)

  The type of the expression e must be C_STR_T.  It is an error if
  the expression is NIL.