Reply to note from Edward Mendelson <em36@xxxxxxxxxxxx> Wed, 4 Aug 2021 18:00:42 -0400 > I know that XyWrite can be programmed to do anything. Is there a > way to make the "dos" function perform a CLS when it runs? Sure (breaking it into 3 STARTUP.INT lines): BX dos/nv/x/z /c setcfg lins=35 >nulQ2 ;*; BX D SL=35Q2 ;*; BX dos/nv/z /c clsQ2 FF ;*; Note that switch /X (freeze the display) is omitted from the CLS command. That's to ensure that the XyWrite display is refreshed after CLS. For good measure, I follow it with a func FF (refresh the display, embedded with PFUNC FF); this may be superfluous, but it will do no harm. Alternatively, you may be able to omit CLS, and just use func FF: BX dos/nv/x/z /c setcfg lins=35 >nulQ2 BX D SL=35Q2 FF ;*; Belt-and-suspenders may be safer, though. -- Carl Distefano cld@xxxxxxxxxx