[HELP] Change rate and fix skill damage

[tanquang]

I have read a lot of articles about how to change the ratio in Server.cfg file. However, I don't really understand all the items that are in it, I just know that the formula counts as the ratio * 100 (or 1000) !
Example of my Server.cfg file:

 
 ExpRatio                     10000 // Basic EXP rate 100%
 ExpRatioParty                15000 // EXP rate when you in party 150%
 SpRatio                ??? // Basic SP rate
 SpRatioParty            ??? // SP rate when you in party
 DropItemRatio               5000 // Item drop rate 50%?
 DropGoldAmountCoef        5000 // ???
 HwanGainFactor            ??? // ???

Commonly shared Server.cfg files include only 4 items "ExpRatio", "ExpRatioParty", "DropItemRatio", and "DropGoldAmountCoef". The items "SpRatio", "SpRatioParty", and "HwanGainFactor" are hardly mentioned, so I don't know if it exists or not?
In addition, I really do not understand what 2 items "DropGoldAmountCoef" and "HwanGainFactor" work? Do "DropGoldAmountCoef" helping to increase the amount of gold drop and "HwanGainFactor" to help speed up the rage mode?
I hope someone can provide me with complete documentation of items and item information of item in Server.cfg file?!
I try to change the "Simultaneous Attack" index of some skills from 5 (default) to 8 (I want). However, after editing, export to .txt files and import them into media.pk2, those skills only cause standard skill damage on 5 targets, and 3 nearby targets only lose 1 HP !How to fix this?
Addition, can someone give me the path to the image files of weapons and monsters?
Thank you!

[MentaL]