UPDATE# EXPANDED MEMORY

Graphics screens and terminal rollback screens can now be kept in expanded
memory (EMS), and the size of the screen rollback buffer can selected and
changed at runtime.  When sufficient expanded memory is available, you can
have up to 8000 rollback screens.

SET ROLLBACK <number>
  Specifies the number of text screens to be kept in the rollback buffer.
  Each 24x80 screen occupies about 4K; bigger screens need more space.	Don't
  confuse this command with SET TERMINAL ROLLBACK, which tells what to do when
  characters arrive for the screen while it is rolled back.

SET TERMINAL EXPANDED-MEMORY { ON, OFF }
  Whether to use expanded memory for retention of graphics screens and for
  text terminal-emulation rollback screens.  The default is OFF, to use
  conventional memory.	ON leaves extra room in conventional memory for
  running other programs, does not rely on your video adapter's memory for
  storing graphics images, and allows more rollback screens, limited only by
  the size of your PC's available physical memory.  ON requires that an
  expanded memory manager, such as EMM386 or QEMM, be correctly installed.
  Also see SET ROLLBACK, which tells how many screens are to be saved in the
  rollback buffer.

See the Memory Management section of KERMIT.BWR (MSKERM.BWR) for further
information.


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