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Is there any way to use a small font size in questions or answers? That is, for the purpose of minor and possibly irrelevant information?

I've checked the Markdown syntax but couldn't find anything. However I feel I've seen it on the site somewhere...

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You have editing powers on SO. Check the post where you have seen it ;) Or do what random says. – Ladybug Killer Oct 21 '09 at 13:23
You're right John, but I never think of it when I see it! – Alex Angas Oct 21 '09 at 13:24
up vote 48 down vote accepted

You can use the <sup></sup> or the <sub></sub> tags for that:

This is sub text, and this is sup text.

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Don't forget <sup><sub>This is subbed-sup text</sub></sup>. And:… :-) – Arjan Feb 23 '10 at 10:32

Use the traditional <sub></sub> tag (for text to shunt into subscript).

<sub>Thar be monsters under the bed, ma</sub>


Don't turn off the night light please.

Or you could go superscript with <sup></sup>

Open up a floating balloon and suck some helium and your voice goes like this.

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That's a heck of a powerful tag, that can change the content of the text it contains. – Michael Petrotta Oct 26 '09 at 2:09
That it does, and it is a partly affected semantic hack nonetheless. – random Oct 26 '09 at 2:24

It'd be nice if this was officially supported. The sup/sub thing is a nasty hack.

IMHO support for the <small> tag would be ideal.

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<small> would be the hack here. Both <sup> and <sub> are valid and semantic HTML tags. – random Oct 21 '09 at 15:38
They're valid and semantic tags for writing superscripted or subscripted text. Using them to make text small is not at all semantic. – Kip Oct 21 '09 at 15:50
See Allow the <small> tag. – Arjan Jan 23 '11 at 11:54
i would also agree, that using superscript or subscript for small fonts is defiantly more of a hack, than using the small tag for small fonts :) – hexerei software Jun 27 '15 at 22:54

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