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

  The ACTIVATE DEVICE statement allows you to activate  an  output  device
  that  has  been  explicitly  deactivated.  Subsequent graphics output is
  displayed on the specified device.  VAX BASIC automatically activates  a
  device when it is opened with an OPEN...FOR GRAPHICS statement.

  Example

  EXTERNAL PICTURE square,circle
  OPEN "VTA247" FOR GRAPHICS AS DEVICE #2
  OPEN "RT1" FOR GRAPHICS AS DEVICE #3
  .
  .
  .
  DEACTIVATE DEVICE #2
  DRAW square !Output goes only to dev #3
  CLEAR #2
  ACTIVATE DEVICE #2
  DRAW circle !Output goes to dev #2 and #3

  Additional Information (explode) :

• Syntax