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Functions summary:
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Independent of genie_figure:
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aspect
clearfigs
meta
xycursor
xyselect
xyzselect



Inquires of graph_range: makes an assumption about the 
type of plot objects present and the number of frames
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(These routines assume that there is only one graphics frame)
(They also only test the type of plot recognised in graph_range,
but in practive this means they omit only image, text and
rectangle objects)

colorslider

lx
ly
lz
lc



Only makes changes to genieplot persistent variables:
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(no graphics changes)

acolor
aline
amark
bin



Makes changes to genieplot persistent variables:
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(Assume only one graphics frame in the figure)

linx, liny, linz
logx, logy, logz



Specifically genie_figure
--------------------------
genie_figure_create
genie_figure_target
genie_figure_keep == keep_figure
genie_figure_make_cur == make_current
is_genie_figure

genie_figure_all_handles 	*** Makes assumptions about the type
								of plot objects we recognise
genie_figure_parse_pot_args
genie_figure_parse_pot_args2

	
	

	
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Small to do:
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Add paoc, psoc etc to Herbert and Horace

overplotting seems to be resetting limits in 2015a (but not 2014a) - why?

Horace: 1D objects don't understand da,ds etc, and 2D don't know dl, dp...
        I think that this is correct; cannot in general combine 1d objects
		into 2D sqw object (bins not matching), and splitting 2D sqw is not 
		obviously a useful thing to do.

plot_oned, plot_twod can be tidied as a lot of argument checking is
now done in genie_figure_parse_pot_args.

get rid of verLessThan? When was it introduced?

graph_range to get limits for hggroup objects

No 2D contour plot at the moment (dc, pc)

Implement smoothing in 2D

colorslider needs tidying; can we bury colorslider_copmmand in private?

mycolormaps, viewcolormap, one_color: overhaul!