example:

the html code for empty is

∅

Code Name: empty
Character: ∅
Unicode Code Point (Decimal): U+2205 (8709)
Standard: HTML 4.0
DTD: HTMLsymbol
Old ISO Subnet: ISOamso
Description: empty set (= null set = diameter)

You can use this empty html code to customize your profiles like your myspace facebook hi5 friendster twitter and all other social network sites this is how you can put empty symbols on your web page. what else besides empty set (= null set = diameter) do you want to know the html code?