Enable 'Find in page' functionality in hypertext panels

[DarthTealc]

Details

Would it please be possible to have some functions to enable the 'find in page' functionality in hypertext panels? This would allow users to search when useful, especially for locally generated pages where using a serverside search isn't viable and locally embedding a javascript search library is overkill.

Suggestions

:AllowFind(true) / :AllowFind(false) - If true, allows the user to do ctrl+f to make the panel appear whenever they want. 'false' is default and behaves as current.
:OpenFind() /:CloseFind() - Opens or closes the find panel. This ignores the 'AllowFind' and would be for scripts to have their own button or lua-initiated find instead of using ctrl+f.

If this isn't possible to implement in the old engine on main branch, it would still be beneficial for the x86-64 branch.

Example in Steam