All syntax for EVERY command in the Ti 84+ CSE is already pre-built in. Simply scroll down in a menu, any menu, and press + on it and it will come up with the syntax, with the optional things u can add to, like color in between these [ ] .
It also has the option to type the command while looking at the syntax, so you can see where you put things, then you can paste it into the program editor. It is one of the most HELPFUL things i have every found. No more having to fiddle around to find out how each command is supposed to work, it just tells you.
Yes it does work for every single command too, because it is labeled catalog help, which means it is for all of the catalog.
Well I hope you guys use that in the future, it is awesome that Ti included that in the calculator and I hope they keep it in the future.