There are three types
of variable that can be used in a TNT Basic program...
An integer variable can hold any whole number value. They can
hold both positive and negative numbers.
A floating point variable can hold any number both positive and
negative. This includes decimal point numbers.
A string value can hold any sequence of letters. e.g. "Cat",
"Dog" or "Chicken".
A variable can only be
one of these three types.