translation
Hypertext links in HTML (draft)
TRANSLATION
The TRANSLATION relationship specifies a translation to
another language.
When REL=TRANSLATION, the target is a translation to another
language. This value will most typically be used with the LINK
element, in combination with specification of the target
document's language as a LANG attribute value. Presumably,
REL=TRANSLATION can be used with the A element to specify a
translation of a document fragment, such as a phrase in a
foreign language.
When REV=TRANSLATION, the current document, or document
fragment, is a translation of the target.
[引用: 4.4f. Other REL and REV Values Under Discussion -- Hypertext links in HTML (draft) より]