SC23: Test syntax checking of indentation pragma. 1. Test not three arguments. @p indentation @p indentation = @p indentation = xxx yyy 2. Test second argument not "=". @p indentation x sloth 3. Test third argument is not legal. @p indentation = sloth 4. Test third argument is none. @p indentation = none 5. Test third argument is blank. 6. Test pragma opposes earlier pragma. @p indentation = blank 7. Test pragma does not oppose earlier pragma. @p indentation = none