I wanted to know how elemental determined which file is beign loaded into memory. Does it systematically load everything located under the data directory, or will it only load a file when requested by the XML files.

If it load everything, does that mean that I could create a second elemetal directory structure, only copy the program files and the data files I need then Add my data files. When the program would start, it wil only load what's there. So if there is less files than the original game, it will actually take less memory.