Workstation Description File Keywords

`CLASS`	keyword	The workstation class; the following classes are defined: `GRAPHICS_OVERLAY IMAGE_DISPLAY IMAGE_OVERLAY MATRIX_PRINTER METAFILE_INPUT METAFILE_OUTPUT PEN_PLOTTER TERMINAL WINDOW WINDOW_OVERLAY`
`ERASE_TEXT`²	`character`	A character string that can be sent to the terminal to clear the text screen. Control characters are represented by `^`. (For devices of class `TERMINAL` only.)

`DEFAULT_NAME`³	`character`	The name used by the workstation handler to open the device when a connection identifier of 0 is used. (Not for devices of class `TERMINAL`.)

`SCALE`	`real`	The approximate size in metres of the workstation’s device units. This item is ignored if the GKS ‘device units’ for the workstation are metres.

`OUTPUT`	`keyword`	Either `DIRECT` if the workstation handler sends instructions directly to the device or `FILE` if they are written to a file.

`CLEAR`	`keyword`	`SELECTIVE` if areas of the display surface can be erased by writing with colour index zero.

`OPEN`	`keyword`	`NORESET` if the device can be opened without resetting the device.

`AGITYPE`	`integer`	This is used internally to construct the AGI name. It is mandatory for every IDI workstation. It is also required in GKS for those devices where the AGI type does not correspond directly to the GKS type (e.g. for devices which are image overlays).