my questions may be silly for you, but I really would like to get serious answers from you, so please, have mercy

I have just Diablo 1 - without Hellfire.
I installed mod from: http://mod.diablo1.eu.org/ and I thought it would be just HD mod (for change of resolution) in Diablo 1. But then - it changes a lot - new characters, new spells etc. and this is great.
1. Is it diablo "Awake" mod mounted with HD?
2. Is there a skill description for each character? I play mage and I cant find what a "Elemental drain skill" and "Unsummon skill" is. I didnt play any other characters, but the are probably aslo have skills without description. Can anybody tell me what are these skills for?
3. On http://diablo1.eu.org/?en_spells,15 there are spells descriptions for 4 pages, staffs and scrolls. I have 6 pages in my book. Is anywhere description of the 2 missing pages?
Thanks! I really enjoy that mod, and probably will have more questions in the future.