Variables can be used to permanently store information that would otherwise be lost on the stack. They can hold any data type. Variables can be local to the current equate or global to all equates. Once defined a variable can never be undefined (unless local where it will be undefined when the equate finishes), nor can the data type it was defined with be changed. The data type of a variable (and the variable itself) is declared when a value is written to the variable (the given name will be created as a new variable if it does not exist). A variable cannot be used until an initialising value has first been written to it to declare the variable and its type. Writing a different data type to a variable will coerce the value to the data type of the variable.
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