GDDM-GKS V1R1 Programming Guide and Reference
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Control items

GDDM-GKS V1R1 Programming Guide and Reference
SC33-0334-00



End item


 0  L


This is the last item of every metafile. This item is used to set the error condition No item is left in GKS Metafile input.

   Clear workstation


 1  L  C


Requests the Clear workstation (GCLRWK) function for all active workstations.

  • C(i) - Clearing control flag
    • 0 = Conditional
    • 1 = Always
      
      

Redraw all segments on workstation


 2  L


Requests the Redraw all segments on workstation (GRSGWK) function for all active workstations.

   Update workstation


 3  L  R


Requests the Update workstation (GUWK) function for all active workstations.

  • R(i) - Update regeneration flag
    • 0 = Perform
    • 1 = Postpone
      
      

Deferral state


 4  L  D  R


Requests the Set deferral state (GSDS) function for all active workstations.

  • D(i) - Deferral mode
    • 0 = As soon as possible (ASAP)
    • 1 = Before next interaction globally (BNIG)
    • 2 = Before next interaction locally (BNIL)
    • 3 = At some time (ASTI)
  • R(i) - Implicit regeneration mode
    • 0 = Allowed
    • 1 = Suppressed
      
      
Message


 5  L  N  T


Requests the Message (GMSGS) function for all active workstations.

  • N(i) - The number of characters in the string.
  • T(Nc) - The string with N characters.

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