Number variable. A variable that can store a single value. For example MyVar = 1.23
String variable. A variable that can store a text string of up to 1000 characters. For example MyVar$ = "Some Text"
Array. A variable that can store more than one value. For Example MyVar(3) = 1.23
[ ] The use of these brackets in the arguments means that it is optional to enter a value or variable.