XML is all ASCII so editing is best done with notepad. Since XML is what it is, you would have to understand all the tags used by that author of the app that used this XML file.
Can I edit open source XML in windows notepad? I understand Notepad in Windows functions as a program editor as well as a text editor. Currently when I open these files they open up online but I can edit them in notepad or wordpad in Windows 7. If not in notepad what do you suggest?
I'd like to do minor tweaks to a 3D viewer but have not worked with XML.