Chams Hack(Question)

Hello ppl.
As I'm a newbie I'd like to ask you what the chams hack is for....
When the public hack still worked i used it together with Wallhack to see what players were behind the wall and what players were in front of me(I noticed that the chams color thingy changes when they are behind the wall). Did i use it the right way? Or is the chams hack also useable for other things you couldn't do without it?

You're doing right, chams works for this, to you recognize when the player as behind the wall and when are in front of you. Because if you use just wallhack its hard to recognize when the player are behind the wall or not, making prefires and delivering you are a hacker.