This allows players to examine an (identified) spellbook, skillscroll, wand, dust, etc and get the description of the spell or skill it contains. Previously this information was displayed only when learning a spell.
Note that many spells have typos or redundant information in the description, and skills have no description at all -- I have other patches under construction to address this.
Updated: now properly supports skillscrolls and skill tools.
More screenshots (using patch 379 for skill descriptions):
https://i.imgur.com/mpgjacK.png
https://i.imgur.com/lIItqg6.png
Patch applied as r21515, thanks :)
Last edit: Nicolas Weeger 2020-10-20