XF 2.0 What does aria-hidden="true" do?

[Stuart Wright]

Want to replace the moderator bar Approval queue and Reports text with font awesome icons. Looking at copying stuff from the mail and alert icon examples.
Wondering what aria-hidden="true" does.
Thanks

 

[Snog]

https://www.w3.org/WAI/PF/aria/states_and_properties#aria-hidden

 

[Stuart Wright]

Oh - I thought it was a Xenforo-specific thing. Thanks