Nice chart, DrByte. Thanks for pointing it out. Don't think I would have found it otherwise. Hopefully, the downloads section will one day become searchable.

The chart indicates that only 3 main directories are worked with for overrides.
includes - languages, modules, templates

Although the chart looks like it is/was part of something with more information on overrides, if I know the 3 above dir. are all I need to focus on then it definitely helps to focus on the required areas.

I find I'm asking a lot of questions on the override setup because I have not yet wrapped my head around its proper usage. Will be doing a CSS Template shortly that I would like to freely offer to others and that should answer a lot of questions as well. Don't know about others but completely understanding how the overrides setup works, is so very important and for many reasons.