If the function has no parameters it is defined as follows:

function [definition of return values] = function name()
  // implementation code
endfunction

If the function has one or more parameters it is defined as follows:

function [definition of return values] =
              function name (type parameter1, ..., type parameter_n)
  // implementation code
endfunction

PAscript function parameters are transferred with Call-by-Value, which means that the value of the variable is copied and all changes to the parameter within the function have no effect on the variable (used as a parameter) outside of the function. However, sometimes a change to the variable is desirable. PAscript has defined the keyword ref for this purpose.

A parameter marked with ref can be changed within a function and the change will still be visible after the function has been executed.