Hi
Take it on good advice..., there are reasons, that none of us wants to fiddle with those files:
1) The IDE does A LOT OF BOOKKEEPING!
2) The risks of messing things up to a FUBAR scale are simply to high.
If you must, use the IDE as much as you can, but be duely warned....

Dolphin, Kate & KWrite are good too, but again -> be warned.
Regards Benny