CALL

sub MyPrint(i)
  print i
end

a = @MyPrint
call a, "test"      ' when using CALL for subroutines,
                    ' please use CALL without brakets

func Increment(i, b)
  return  i + b
end

x = 1
a = @Increment
y = call(a,x,2)     ' when using CALL for functions,
                    ' please use CALL with brakets
print y

sub Increment(byref i, b)
  i = i + b
end

x = 1
a = @Increment
call a,x,2
print x

func Increment(i)
  return i + 1
end

func Decrement(i)
  return i - 1
end

func MyFunc(f, i)
  return call(f,i)
end

a = @Increment
b = @Decrement
x = 2
x = MyFunc(a,x): print x
x = MyFunc(b,x): print x