2.2.52 [HTML5] Section 7.1 The hidden attribute

C0070: Assistive technologies determine what is done with the hidden items

The specification states:

 ... The hidden attribute
     ...
     When such features are available, User Agents may use them to expose the full 
     semantics of hidden elements to AT when appropriate, if such content is referenced 
     indirectly by an ID reference or valid hash-name reference. This allows ATs to access 
     the structure of these hidden elements upon user request, while keeping the content 
     hidden in all presentations of the normal document flow. Authors who wish to prevent 
     user-initiated viewing of a hidden element should not reference the element with such 
     a mechanism.

All document modes (All versions)

Assistive technologies have access to elements that are in the hidden state, and those technologies determine what is done with the hidden items.

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