<SUB> | NN 2 IE 3 HTML 3.2
<SUB>...</SUB> | HTML End Tag: Required
The sub element is a typographical element that instructs the browser to render its content as a subscript in a font size consistent with the surrounding content. Browsers tend to render this content in a smaller size than surrounding content.
Example
    <P>"Heavy water" (H<SUB>3</SUB>O) has one more hydrogen atom than regular water.</P>
Object Model Reference
    [window.]document.getElementById(elementID)
Element-Specific Attributes
None.
Element-Specific Event Handler Attributes
None.

lang | NN 3 IE 4 HTML 4
lang="languageCode" | Optional
The language being used for the element's attribute values and content. A browser can use this information to assist in proper rendering of content with respect to details such as treatment of ligatures (when supported by a particular font or required by a written language), quotation marks, and hyphenation. Other applications and search engines might use this information to aid the selection of spell-checking dictionaries and the creation of indices.
Example
    <SPAN lang="de">Deutsche Bundesbahn</SPAN>
Value
Case-insensitive language code.
Default
Browser default.
Object Model Reference
    [window.]document.getElementById(elementID).lang