How do I use the "right-to-left override" in Safari for Mac?
Open up the Web Inspector with Command+Shift+I and type in this:

copy('\u202e');


If this won't throw an error, the right-to-left override is copied to your clipboard. You can try it even in the console, just press Command+V and then type some text.

This works cross-platform (just be sure to use Ctrl in Windows), in all WebKit browsers, but only inside the console.



Update: I've just installed Safari 5 on Win7 x64, and it seems that the character is copied to the clipboard, but Safari can't handle it. The HTML entity that Dori suggested will work in any HTML document. There, it will work in questions and answers, but not in chat and comments.