So, I have a weapon that's, "Short Sword IV R SL 63d". ... What does the R mean? I know the SL is Second Life, and the timestamp and level are obvious...

SL means it has 0 chances to drop from your hero.
R means it has been repaired and can not be modified for the second time.

It wasn't actually repaired and currently there are no ways of fixing artifacts.
I understand it sounds weird (why put it in the description if it doesn't exist), but the system is too early to implement and it's just safer to leave it as it is, changing the descriptions to different states will probably add some bugs and we don't want that.

Huh, okay, so when artifacts can be repaired, they can only be repaired once? Will they be repaired to full, or only a portion thereof?

Also, you said modified once... Can they be modified in another way other than just restoring the duration, when the time comes?

Sorry, I just like knowing about future features. ^^; Like clan castles!

Yes you will be able to repair it fully or upgrade, but only once.

Oooh, nice! +_+ Is it just going to be a number upgrade, IE level II to III, or is there something more devious and interesting on the horizon?