tool for extracting lists of variables

this script produces a list of variables defined in pggrid_controls;
useful for making defaults list and namelists.
new layout controls installed

simple box appears to work
test simple legend plot

layout now works, controls for legend are sensible
testing of plots

everything works, when using the xwin and ps devices; I do not get
output with the png device!
png output still intermittent

weird stuff, nothing seems to work.