SGS_OPEN

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SGS — Simple Graphics System
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SGS_OPEN

Open graphics

ACTION:: Performs all GKS calls necessary to get the specified workstation open and active. Also sets defaults for various attributes and should therefore be used if other SGS routines are called. It is intended to be used at the beginning of graphics.
CALL:: SGS_OPEN(wkstn,izonid,istat)
INPUT PARAMETERS:: $<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"><mrow> </mrow></math> w k s t n C W o r k s t a t i o n n a m e : a c h a r a c t e r s t r i n g w h i c h t r a n s l a t e s u l t i m a t e l y i n t o G K S w o r k s t a t i o n s e q u e n c e n u m b e r a n d c o n n e c t i o n i d e n t i fi e r . S e e S U N / 57 f o r f u l l d e t a i l s o f f o r m a t s s u p p o r t e d; s i m p l e s t i s t h e t w o n u m b e r s a s d e c i m a l s s e p a r a t e d b y a c o m m a .$
OUTPUT PARAMETERS:: $<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"><mrow> </mrow></math> i z o n i d I Z o n e i d e n t i fi e r f o r t h e b a s e S G S z o n e o n t h i s w o r k s t a t i o n; a l l o c a t e d b y S G S . i s t a t I I f w o r k s t a t i o n i s o p e n e d O K, t h e n t h i s v a l u e i s z e r o .$
GKS EFFECT:: If GKS is already open it is left open; otherwise it is opened with logical unit 22 as the error channel. The specified workstation is opened and activated. Maximum deferral is requested. An SGS base zone filling the display surface is set up. The polyline aspect source flags are set to bundled and the marker and text aspect source flags set to individual.

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