Changing the formatter options does not apply to the script in the Preview window.
To replicate:
1. Open Toad Data Point options (Tools | Options | Editor | Formatter)
2. Change the Formatter option Keywords value related to “Case” to Lowercase
3. Click back to the Preview tab, to check the settings, but the text formatting hasn't changed
This issue only applies to the Preview Tab, the normal formatting options in the Editor work as expected.