Example:
mdsw_noch.pro
mdsw_noch.pro is the smaller widget example derived from the larger PPPL
mdsw.pro plotting tool. It is useful for studying widget layout, input handling,
draw-widget plotting, and printer selection.
COMMON mdsw_noch_INPUTS, MDSserver, shot_num, signal_name
MDSserver = 'nstx'
shot_num = 89725
signal_name = '.waveforms:MB_IP_SL'
...
graphicsDrawID = WIDGET_DRAW(baseRow1, RETAIN=2, XSIZE=550, YSIZE=400)
...
XMANAGER, 'mdsw_noch', baseID, /NO_BLOCK