Need printing for l_compound

[rwoldford]

Example: l_pairs(iris) and CTRL-P on the resulting window.

To get it to export properly, CTRL-P for the parent of the plots in l_pairs must be assigned.

Could do this in l_pairs function itself (and hence do it for each and every l_compound creation) but this seems a waste. Would like to do it once for all l_compounds.

Solution seems that it should be in TCL in the exportImageDialog. If we could check the parent and see if there is a binding for CTRL-P. If not, create one