Code:
gametitle= Suikoden V
comment= By Godwin
//Item Slot activator <-- Comment
//patch=1,EE,20a40a9c,word,0000001e <--Off
//Basic Combat <--- Comment
//patch=1,EE,20A40AA0,word,01011108 <-- Off and doesn't work right
//Max SP <---Comment
patch=1,EE,2036d164,word,00000000 <--- On
//Max Gold <-- Comment
patch=1,EE,2036d0f4,word,00000000 <-- On
//Skill learning bypass <-- Comment
patch=1,EE,203A8CF4,word,24020007 <--- On
patch=1,EE,203A8D18,word,24020007 <--- On
patch=1,EE,203A9268,word,24020007 <--- On
So yes, putting // before a line negates it by making it a comment. The code won't work with // before it.
I don't know how to really explain this well. But 0xxxxxxxx is the original line of code to be altered. 2xxxxxxxxx is a mirror in the RAM and operates the as 0xxxxxxxx and you can use other mirrors, but it would only be for show at this point. 1xxxxxxxxx is hardware and needs to be changed to 0xxxxxxxxxx.