Library /sys$common/syshlp/basichelp.hlb Graphics, CLEAR  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The CLEAR statement clears graphics text and images from the  screen  if
  the  screen  is not already clear.  If no device is specified, VAX BASIC
  clears the default device.

  Example

  OPEN term_name FOR GRAPHICS AS DEVICE #1
  OPEN "VT231 FOR GRAPHICS AS DEVICE #2
  !Select_menu displayed on all devices
  DRAW Select_menu
  CLEAR #1 !Clear the display on dev #1 only

  Additional Information (explode) :

• Syntax