This might seem like a bit of an odd request for information to some of you, but anyway:

Is there a way to rename the flags in a custom map on the client without changing the map itself. So it can still work on any server running the original version. For instance: renaming "the graveyard" to "the Graveyard" on Narbeth, or renaming "Cranberry's 88" (or whatever it is) to "Flak 88" on Anvil, and still have them running normally. (Bad wording I know, I can't think of an easy way to express what I want.)

For the official maps, the flag names are in the resource/DoD_English.txt and can be changed easily. Is there a similar file that custom maps use?

I'm quite sure that the only way to do this would be to edit it in hammer, although you could try entedit, it might actually work.
http://maps.tjfweb.com/transfer/EntEd.zip

I think that's the name of the program.


Not sure if it will change the filesize or not, but you could try it.
Locate dod_control_point there will be more than 1, each one a different point.