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1.2.17. More First Functions
A user-defined function can have any number of parameters of any
type, even a variable number of parameters.  Note that even a function
with no parameters must be called with parentheses.

Example

Define Test1()
  PrintLn('This is a function with no parameters.');
  For I := 1 To 10 Do
    Print(I^2,' ');
  EndFor;  
EndDefine;
Test1();
This is a function with no parameters.
1 4 9 16 25 36 49 64 81 100 
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Define Test2(...)  -- a variable number of parameters
  If Len(ARGV) = 0 Then -- parameters are stored in the list ARGV
    Return 'Wrong number of parameters';
  Elsif Len(ARGV) = 1 Then 
    Print('There is 1 parameter: ',ARGV[1]);
  Else
    Print('There are ',Len(ARGV),' parameters: ');
    Foreach P In ARGV Do
      Print(P,' ');
    EndForeach;
  EndIf;
EndDefine;
Test2(1,2,'string',3);
There are 4 parameters: 1 2 string 3 
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