OPEN_PRINTER1@ does not generate a standard "Open Printer" dialog box which
means that printing can resume to the current printer after calls to
OPEN_PRINTER@ and CLOSE_PRINTER@. This avoids the need to repeatedly select the
same printer. Subsequent calls to Silverfrost graphics routines are written to this
device. The printer or plotter is activated when CLOSE_PRINTER@ (see ) or the
routine NEW_PAGE@ is called (after calling this routine, it may be necessary to
reset the text attributes).
The handle is supplied by the programmer and is used in conjunction with