Changes in how existing elements work in Matador ActionScript

<<intro here; supported only in FP7>>

<<intro>> When publishing for Flash Player 7, :

Flash Player 7 Earlier versions of Flash Player
Evaluating undefined in a numeric context results in NaN. Evaluating undefined in a numeric context results in 0.
The value of undefined.toString() is undefined. The value of undefined.toString() is "" (an empty string).
When you convert a string to a Boolean value, the result is true if the string has a length greater than zero; the result is false for an empty string. When you convert a string to a Boolean value, the string is first converted to a number; the result is true if the number is nonzero, false otherwise.
When you load external variables (for example, using LoadVars.load()) , the variables that are loaded are case sensitive. When you load external variables, the variables that are loaded are not case sensitive.