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2Explanatory Note

Functions in this reference are described in a generic expression. For example, if there is a reference described like func(num:number), it means that func function takes one argument named num with value type of number. You can call it like func(3).

If an argument is optional, the argument name is followed by a symbol ?. For example: func(num?:number). You can call it as func(2) or can omit the arugument like func().

If the the arument name has * symbol followed, the arument takes zero or more values. For a function that has a generic expression func(args*:number), it can be called like func(), func(3), func(3, 4), func(3, 4, 2), and so on.

If the the arument name has + symbol followed, the arument takes one or more values. For a function that has a generic expression func(args+:number), it can be called like func(3), func(3, 4), func(3, 4, 2), and so on. In difference with *, it must take at least one value.

An argument may have a default value. The default value is described with => operator like func(num:number => 4). In such a case, if num is omitted, the default value 4 shall be used.


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