DCL:GRPH1:SWPACK: Machine-Dependent Routines:Explanation of Subroutines: Control Routines
Opens/closes a device.
- All SWPACK routines except for swpset(swpstx) and swcset(swcstx) are called between these routines.
- STPACK performs the rotation of the coordinate system.
- The internal variable 'IWS' handled by SWpGET/SWpSET must be set before calling swdopn. This internal variable is usually set in sgopn.