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# IMD common. A common is necessary since there is no graphics descriptor
# in the argument list of the kernel procedures. The stdgraph data structures
# are designed along the lines of FIO: a small common is used to hold the time
# critical data elements, and an auxiliary dynamically allocated descriptor is
# used for everything else.
pointer g_kt # kernel transform graphics descriptor
pointer g_tty # graphcap descriptor
int g_nframes # number of frames written
int g_maxframes # max frames per device metafile
int g_ndraw # no draw instr. in current frame
int g_in, g_out # input, output files
int g_xres, g_yres # desired device resolution
int g_frame, g_color # display frame and graphics color
char g_device[SZ_GDEVICE] # force output to named device
common /gioimd/ g_kt, g_tty, g_nframes, g_maxframes, g_ndraw,
g_in, g_out, g_xres, g_yres, g_frame, g_color, g_device
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