The <sub> tag is supported in all major browsers.
The <sub> tag defines subscript text. Subscript text appears half a character below the baseline. Subscript text can be used for chemical formulas, like H2O.
Tip: Use the <sup> tag to define superscripted text.
The <sub> tag also supports the Global Attributes in HTML.
The <sub> tag also supports the Event Attributes in HTML.
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