Board Thread:LotR Mod Technical Support/@comment-25565811-20161129202509/@comment-25565811-20161130140855

Yes, I know that. Probably, those stay fixed, unless Mevans changes them in the Mod.

I realized, that you can also summon items in the world, as they are entities there. But you have to fill a heck of tags. So those commands get quite big and complicated. In addition, I think, they have also the  somewhere hidden in a tag.

All in all, in my opinion, Minecraft did not the best job, only allowing numbers there instead of symbolic names (which would be just predefined constants). Perhaps they expand it one day.