Passwords
 

Could someone please tell me about passwords because i know they do something like press this key to make this happen like. press 'f' to fly as an example.

If I remember correctly, "passwords" are from RPG Maker 2000. The current version of that is "Key Input Processing" which is a bit more expanded.

It does what it says: Processes an inputted key. If you hit up, it'll assign a variable to 4, and if you hit down, it'll assign it 1.

This is used to have stuff happen on specific keys. For example, you can have a parallel process that keeps checking if you hit the Shift key.. when you do, the field switches from day to night, or whatever you set up the event to do.

Of course, you can use it for passwords... just nest a bunch of branches within each other. If you get the first one right, it'll wait for the second key, and if you get THAT one right, it'll wait for the third key, and so on.