Red Underlined Text in TextArea

I’m getting red underlines in a TextArea like you get in the TextEdiOSX app when it doesn’t recognise a word.

Can I stop this from happening?

(OSX 10.9.5)

disable spell checking

Yes you need to turn off Auto Spell Check.

http://documentation.xojo.com/index.php/TextEdit.AutomaticallyCheckSpelling

You can do it via code above, or you can turn off AutomaticallyCheckSpelling on the IDE.

Perfect. Thank you both.