Syntax:        TXMACBEGIN(<expN1>)

     Purpose:       Function to begin definition of macro designated
                    by ID # <expN1>.

     Argument:      <expC> is the ID # of the macro.

     Returns:        0  Successful

     Usage:         TXMACBEGIN() is used to begin the macro
                    definition.

     Example:       * To set up macro # 1
                    TXMACBEGIN(1)
                         (Print commands to print repeating text)
                    * End macro # 1
                    TXMACEND(1)


     See Also:      TXMACEND(), TXMACDEL(), TXOVERLAY(), TXMACEXEC(),
                    TXMACCALL()