Is there a way to strike-through a sentence in Quest? I would post an example but Markdown doesn't have strike-through commands as far as I know.

Try this (using CSS and HTML):

msg("<span style=\"text-decoration: line-through;\">This is wrong</span>")

Nope! This happened lol. I think I'd have to make it an expression. I'd rather keep it a msg for the time being.

Error running script: Error compiling expression '"<span style=\\"text-decoration: line-through;\\">Test</span><br/><br/><br/><br/>"': SyntaxError: Unexpected token "text" <IDENTIFIER>; expected one of <EOF>Line: 1, Column: 17

You have double backslashes in yours. This version will cause the roor you see:

msg("<span style=\\"text-decoration: line-through;\\">This is wrong</span>")