[joropito]

Normally on the engine or game dll there're calls (ClientCommand for example).

Metamod hooks the call and replace with this:

ClientCommand_Hook() {
  call Metamod_Module_Client_Command()
  call Original_ClientCommand()
  call Metamod_Module_Client_Command_Post()
}

So not all _Post() calls can be useful, sometimes only works to know there was a call. The thing is you can't modify too much stuff after the original was called.