HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

2baratorch:
If you're going to fix everything, maybe you could also fix the spellbook?

Do you mean the misaligned descriptions in HD? Are you using the English version?
If so, the misalignment was intended for the Russian version, because otherwise not all descriptions fit, and the amount of mana required is cut off (in the original SoD 3.0 from буки, they are initially shifted and stretched, for example).

This can already be considered fixed; I'll also make the Russian version more accurate.