BrightSign BrightScript 3.0 Reference Manual - Manual (Page 53)

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BUILT-IN FUNCTIONS
BrightScript features a set of built-in, module-scope, intrinsic functions. A number of file I/O, string, mathematics, and
system functions are also available via the roGlobal object, which is documented in the Object Reference Manual.
Type()
Type(a As Variable) As String
This function returns the type of the passed variable and/or object. See the Object Reference Manual for a list of available
object types.
GetGlobalAA()
GetGlobalAA() As Object
This function fetches the global associative array for the current script.
Rnd()
Rnd(range As Integer) As Integer
Rnd(0) As Float
If passed a positive, non-zero integer, this function returns a pseudo-random integer between 1 and the argument value.
The range includes the argument value: For example, calling
Rnd(55) will return a pseudo-random integer greater than 0
and less than 56.
If passed zero, this function returns a pseudo-random Float value between 0 and 1 if the argument is 0.