You have to do a double carat with a space between the two. Like this:
> >
If you do a single one, it shows up as a quote. Double it and it shows as a quote within a quote, which buries it. So this:
> SPOILERS
>
> > Vader is Luke's papa
Shows up like this:
SPOILERS
Vader is Luke’s papa
Or you can just do it on a single line, so:
> > Anakin is a whiny bitch
Becomes:
Anakin is a whiny bitch
Hope that helps!