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

  The SQR function returns a  value  (of  the  same  type  of  the
  parameter)   that   represents   the  square  of  the  specified
  parameter.

  Syntax:

     SQR( x )

  The parameter 'x' can be of any arithmetic type.