Syntax:        TXSETSFONT(<expN>)

     Purpose:       Designates soft font as secondary.

     Argument:      <expN> is the font ID.

     Returns:        0  Successful
                     1  <expN> not numeric

     Usage:         TXSETSFONT() is useful anytime you need to
                    designate the font as secondary. This is
                    associated with a soft font you have previously
                    downloaded.

     Example:       * Print using font ID #1
                    TXDLFONT("TR10R#US.SFP", 1)
                    TXDLFONT("TR18R#US.SFP", 2)
                    TXSETPFONT(1)
                    TXSETSFONT(2)

     See Also:      TXSETPFONT()