Adds a block to store XP that is accessible to all players
This mod is pretty straight forward. It adds an XP Block which allows for near infinite storage of experience which any players can access. In the Creative Menu, it can be found under the "Miscellaneous" tab.
When the block is renamed with an anvil, the custom name will show up above the block when looking at it.
To view how many XP is stored in the block, just look at it, and a nametag-like text will pop up above the block showing an approximation of how many levels are stored and the exact value of XP stored in brackets (toggleable).
The block also has Waila/HWYLA/Jade/WTHIT and TheOneProbe support. All mods' tooltips show the same level approximation, and when sneaking also the exact amount of XP stored.
The block will retain the stored XP when it's broken. The item in the inventory will show the amount of stored XP in its tooltip, too.
The block can pick up XP orbs in a 3 block radius around it. This can be turned off by providing a redstone signal to the XP Block.

(Outdated looking, but still relevant!)

There are a few configuration options which also don't need a restart. You can:
The values you insert for 1. and 2. are multiples of the default speed. If you would set both to 2.0 the emerald would be animated twice as fast as with the default values.
Config options 1-3 are client sided, 4-6 are server sided (latter can be found in the serverconfig folder in your world).
You are allowed to use this mod in any modpack.