I can sucessfully define an icon as symbol (via IDE project property "Symbol").
In my example, I have been using various *.ico files with different resolutions and color-depths.
The selected icon is inserted to the project as image resource.
I noticed that the background transparency of the icon gets translated to black which doesn't look too nice.
A quick&dirty work-around could be to use "white" as transparent color.
Other project properties like "Description", "Company" and "Comment" are ignored.
This area of the IDE needs some more work.
Greetings
A1880