When I'm going through my glyphs and reducing the number of nodes in them, it would be nice if somehow I could place a copy of the glyph with the extraneous points in a non-editable background layer somehow. This is because a lot of times deleting extra nodes will change the shape of the curves and I usually can't remember exactly what those curves looked like. So, placing a copy of the original behind the modified version would allow me to match the curves more precisely.
I suppose I could load the font on my system and render out pics one by one in photoshop, but I wonder if there is an easier more direct way to do this in Fontlab?