using the less than symbol in listing title

[nevadacoinjewelry]

I have in the past used the < symbol in some of my ebay titles.  I just notice that after I save the listing the symbol has been replaced with a space.  Does anyone know why?

[eburtonlab]

Special characters are not directly searchable. Including special characters may hurt your search ranking.

There was a warning against using special characters in item titles in the old "search and browse manipulation" policy, though currently only question marks are specifically mentioned.