The following operators are valid operators for numbers. Note: In addition to these there are also functions in the math module.
range()
The range operator returns an array containing x to n elements. The number it operates on is the start of the range and the first parameter is the end of the range. For example:
(0).range(10) // Returns [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
Note the parenthesis on the number being operated on. These are required in order for the KRL to parse.