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SGS_INIT

Initialize SGS

ACTION:
Initializes SGS and (if necessary) opens GKS.
CALL:
SGS_INIT(lun,istat)
INPUT PARAMETERS:

lun

I

Logical unit number for error messages.

OUTPUT PARAMETERS:

istat

I

Status; set to 0 if SGS is successfully initialized.

GKS EFFECT:
If GKS is not already open GOPKS is called with the specified logical unit number as the error channel.