we have developed a search engine , as usual the search box works without having to click extra button , once user enter search query and press enter the result is shown.
Now, my search text-box has both numerical and string searching ability in single text-box.
Question is, what is the best way to represent to user so that he knows he can search both number and a string as a search query?. My default would be this "5466 or stack" , but is looks too casual and i don't think it conveys much meaningful to users.


