The ent_getmesh sounds great but unfortunately my coding is extremely limited. Can this be done in SED with some sort of on_click event? Can I find ent_getmesh & ent_savemesh in documentation?

I really like the way WED does lights because it creates a nice retro-Quake-Wolfenstein-CBsUndying style that I was unable to do in Blender. The closest program with similar lights that I used is DeleD but he is handling bigger geometry very badly. Also I like the fact that both DeleD and WED are automatically creating lightmap UV/size calculations. In Blender I have to manually unwrap parts of the model for second UV & maps usually have visible seams because of the margins or too much faces so I have to go back, further separate model parts, unwrap new parts again... it becomes very tedious very fast.