I'm almost 100% sure that's for warstories. RMTs are formed simply by your own formatting. Some people may like someone's RMT format, so they make something just like it. I do remember hearing about a thing that does warstories for you, though.
Actually, you might be talking about how a set is visualized. Is this what you're wondering? (for example):
Ferrothorn (M) @ Leftovers
Trait: Iron Barbs
EVs: 252 HP / 88 Def / 168 SDef
Impish Nature (+Def, -SAtk)
- Stealth Rock
- Power Whip
- Thunder Wave
You can get that by clicking Team > Export Team on Pokemon Online or Teambuilder > Edit > Import/Export on PS!.
[4:30:38 PM] Jimbon: i played gx duel academy so you could say i am obelisk blue master rank itachi master 1337 naruto king lv 45 elemental hero duece warrior