6c5d3660_ference_to_HTML_Entities_Codes__why_is_this_featured_
[character] ² [entity name] ² [entity number] ² [description] Superscript 2 [why is this featured?] 
the superscript 2 is a very common symbol when dealing with numbers, such as; 1000²
Entity Code - A Clear and Quick Reference to HTML Entities Codes
why is this featured?