Re: Underline element.

Andrew Fedoniouk wrote:
> For human this markup:
>   <button><u>O</u>pen</button>
> plus associated behavior has clear semantic value and
>   <button accesskey="^O">Open</button>
> is just nothing - user simply has no clue about that accesskey.
>
> Information that is unknown to particular person has
> semantic value of zero for that person, isn't it?

Perhaps <button accesskey="O"><kbd>O</kbd>pen</button> with appropriate 
CSS applied would be a better solution than re‐animating the underline 
element.

Of course, either way, the hint might not help the user much since the 
actual access keys would vary between UAs/hardware (e.g., modifier keys 
may be required (such as Alt or Alt+Shift) and/or the key(s) may already 
be assigned or non‐existent in particular software/hardware and, thus, 
ignored, re‐assigned, or simply execute multiple (possibly problematic) 
actions at once).