Here is a list of rules that deal in and around meta-gaming since that is about the only illegal thing you can do when dealing with T1 style.
1. You are NOT allowed to take real life information and apply it in Role Play. This includes knowing that someone has done something to someone else's character in RP without that character actually having been told IC.
Side-note: For those with with characters who have psychic abilities that allow you to know knowledge outside of being told directly you must RP learning this knowledge, you cannot just automatically go into a thread knowing it.
2. Assuming. Assuming will get you into trouble, and is not a good enough excuse as to why your character knows something that they otherwise wouldn't. So just know that this excuse doesn't fly.
3. Once a fight has begun abilities/items cannot be altered until that thread has ended, and your character is still alive, of course.
Because meta-gaming is about the only illegal thing in T1 combat that you can do it is punished in a more severe way. Knowingly entering into a battle and attempting to change/add moves after the thread has started will result in the instant death of your character (beyond being able to be brought back, no soul, no body, no memories, you are entirely erased and your character will be turned yellow and you will have to start over).
Taking outside information into the RP knowingly will result in a warning, 3 day suspension from the site, doing so again will result in your characters death (see above for details).
Please consider yourselves warned. This thread is here for everyone to look at. Excuses such as "I didn't see it" will not stop the punishment from sticking.