example:

¡

the html code for iexcl is

¡

this HTML character looks like the letter i

i have seen it used but in other languages, it is used to start an exclamation mark. the iexcl symbol look like an upside exclamation mark, the Unicode Code Point or Decimal is U+00A1 (161). this is simply an inverted exclamation mark.

this HTML symbol is simply an inverted exclamation mark that looks upside up from the regular exclamation mark. It is used in other languages other than English. For example it is used in Spanish at the beginning of a sentence