"Start ChatJax" loads MathJax in the current browser window with the usual set of nice things that one should expect.

I recommend that you save it as a bookmark if this is something that you intend on using often.

render ChatJax
^^^ Drag this to your bookmark manager ^^^ (or save it)

For Troublesome Mobile Browsers

If your browser cannot add bookmarks using drag-and-drop or a contextual
menu, add a bookmark as instructed below. Execute this bookmark from the
chat window to start ChatJax.

1. Copy the text from the box below.
2. Create a bookmark to this (or any) page.
3. Replace the contents of the bookmark URL with the copied text.
4. Edit the bookmark title if you wish.