Torque Lib Files

Why is it that there are a set of files (.cc and .h) in the demo called "torque lib files"? When I delete them the whole demo still compiles and links just fine... even with a clean/rebuild all. Does the engine actually need these files?

Also, why is it that under the "torque demo files" the folder "core" folder only has .cc files and no headers like the other folders under "torque demo files".

Seems weird to me...

Thanks.

Venn