Whilst i'm creating this for my own little pet project to ask dumb basic questions in, anyone who has a question and wants it answered should feel free to drop by, the lack of anything like this that i've been able to find, (maybe i'm blind 
), is a bit sad for everyone else who has questions.
Ok my first really basic question. is there any way to modify an existing entry in an XML file without overwriting the entire file? The readme talks about adding new stuff and Total Conversions fine, but my modified tech tree is going to need to add tech option entries to some existing improvements. Having to completely overwrite the existing improvements file is not ideal, and their may be other examples i need to edit.
Does anyone know is ComponentClasDefs.xml is working as far as adding and using entries. I know occasionally some files won't be enabled in some games and this strikes me as the type of file that's most likely to have issues.