example:

¿

the HTML code for iquest is

¿

this is HTML character is called iquest, i don't know what the i stands for, but the quest is for question mark.

the main use for this character is for use in other languages other than English. In the English language, this character is not use, i have only seen it used in the Spanish language.

the iquest character looks like an inverted (upside down) version of the regular question mark.