Michael Horvath Wrote: 1. Does the program indicate anywhere what the filename of the currently selected part or submodel is?
You can either mouse over the part or see the part in the editor section.
Michael Horvath Wrote: 2. Is there a file list somewhere that will allow me to select one or more parts or submodels based on their filename?
You can select all the parts with the same name as the selected part with Select-> Same Part
As far as I know you can't do a "wildcard" based selection
Michael Horvath Wrote: 3. How do I select the current part or submodel's parent part or submodel?
I don't understand the question
Michael Horvath Wrote: 4. Is there a way to decrease the font size of the GUI elements? Can I change the font itself to a different one? The default font is very wide.
You can edit the GUI template. More info is here:
http://www.melkert.net/LDCad/tech/gui