SGS_CLRFG

Set clear screen flag

ACTION:
Sets or clears the ‘suppress clear screen flag on open workstation’ according to the iflag argument. N.B. This function is specific to RAL GKS and is not implemented on all workstations.
CALL:
SGS_CLRFG(iflag)
INPUT PARAMETERS:

iflag

I

1 disables screen clearing on open; 0 restores the normal GKS behaviour.

GKS EFFECT:
GESC is called with escape number 1000.