En conclusion les unités suivantes seront les seules utiles dans les articles :
<span style="font-size:x-small">x-small</span>, <span style="font-size:small">small</span>, <span style="font-size:medium">medium</span>, <span style="font-size:large">large</span>, <span style="font-size:x-large">x-large</span> et <span style="font-size:xx-large">xx-large</span>.