Value = Choose ( Choice , Result #1 , Result #2 [ , ... ] )
This function returns the value of one of its Result #i arguments, according to the value of Choice.
X = 3 PRINT Choose(X, "one", "two", "three", "four") <hr>three
X = 3 PRINT IsNull(Choose(X * 2, "one", "two", "three", "four")) <hr>True