Sorry, Navarro, but the only text decoration that can be applied using wiki code (the actual name of what we use in biographies) is bold and italic. Chris did allow us one exception for superscript using the html tag. Typically this is useful for things like first and second when using the numerals instead of spelling out the words - as in 1<sup>st</sup>, for example. Of course, we all know and love (?????) using 2 apostrophes at start and end for italic, 3 apostrophes at start and end for bold, and 5 apostrophes at start and end for text that is both bold and italic.
I wish we had more leeway, but I do understand the reasoning behind keeping it to a minimum.