2.1.1 [WC3-LONGDESC] Section 3. The longdesc Attribute
V0001: No user interface provided
The specification states:
-
3.0.3 User Agents ... If the longdesc value is valid, User agents must make the link available to all users through the regular user interface(s).
All document modes (All versions)
There is no user interface provided to access the longdesc
URL.