How do I add a "red X", and what it does ?

So I saw some "red X" in some events of programs I opened.

I guess it acts like, "if this event is false" then... but anyway

I have 2 questions about it.

How to add it in some event and what it does.

I would advise reading the manual - it's all explained in there.

You get it by selecting 'Invert' from the right mouse, and therefore means invert the condition.

So if you have a condition that says 'If Right arrow is down' then inverting obviously means when right arrow is not down.

I would advise reading the manual - it's all explained in there.

You get it by selecting 'Invert' from the right mouse, and therefore means invert the condition.

So if you have a condition that says 'If Right arrow is down' then inverting obviously means when right arrow is not down.

I don't know what to say but thanks man. You helped me a lot.