Unknown HTML Character Entity Reference, with XHTML 1.0 Strict DOCTYPE Declaration

Test

&unknown; is rendered as

&unknown;

© is rendered as

©

The innerHTML of the list above is:

About the first dd element:

• [There is no child.]

Expected Result

Conforming XHTML 1.0 User Agent

Conforming XHTML Family User Agent

The character reference (later) is treated as a COPYRIGHT SIGN.

A validating user agent will report a validity error since the unknown entity is not declared.

A non-validating user agent will render the general entity reference (former) as a sequence of nine characters: &unknown;.

Discussion

See a SuikaWiki article on entity references in XHTML documents.