User blog comment:Unknown95387/Heeeeelp No. 2/@comment-5029411-20170812183616/@comment-30754445-20170812192619

This doesn't work anymore, as far as I know (strangely, it does display correctly on old pages using it, but you cannot use is for new/updated blog posts)

To use TeX in a blog post, use the tags $$ and $$ instead.