gflush -- flush any buffered graphics output
Output to graphics plotter devices is normally buffered and then disposed of to the plotter as a larger job, to increase the efficiency of the graphics system. The gflush task disposes of any buffered graphics output and also initializes the graphics subsystem. The cursor mode frame buffer is cleared, any connected graphics subkernels are disconnected, and the memory and file descriptors used by the graphics subsystem are freed. A gflush occurs automatically upon logout from the CL.
The number of frames (plots) the graphics system will buffer for a device is controlled by the MF (multi-frame) parameter in the graphcap entry for the device. When the multi-frame count is reached the buffered output is automatically disposed of to the device.
1. Flush any graphics output and initialize the graphics system.