- A reference guide and manual in Russian for Heroes 3.

Do you think I'm deliberately ignoring your information? On the contrary, I reviewed everything and noted what was useful. I would be grateful if you could point out what else is missing from the reference.

...it's either not in the FM at all, or it's incomplete/unclear for beginners - and your version doesn't have it either.

Let's take a look:
Sheet 05. Classification of units and spells that apply/do not apply to them is provided.
The same, but in more detail, is provided in FizMiG, section 2.4.

Sheet 12. Summary table of treasure rooms. I doubt a beginner would understand it.
Arrangement. Described in sections 3.5 and 5.15 "Battles".

Sheet 17. Creature abilities. Information from previous sections has been added. I didn't see anything new.

Sheet 30. Value column.
Everything is in section 2.9.

Sheet 49. Spell groups are highlighted. Everything is described in detail in FizMiG.

Sheet 71. Movement algorithm.
Everything is in FizMiG. Except for three pictures, for clarity.
Turn order - section 5.15.
I agreed that the peculiarities of AI in battles are interesting.

What's the problem with saving it in xsl format?

What's the problem with using the xslx format?
If problems arise, they need to be solved, not blame someone for not solving your problems in advance.
* FizMiG_v.2.1.xls (9.4 MB)

And create a table of contents in PDF

:) And how exactly?