SGS_ISLER

Inquire selective erase capability

ACTION:
Sets blker to .TRUE. if the current workstation is capable of clearing selected areas of the display; if not it is set to .FALSE..
CALL:
SGS_ISLER(blker)
OUTPUT PARAMETERS:

blker

L

.TRUE. or .FALSE. depending on whether device has selective erase capability.

GKS EFFECT:
None.