How change icons read & unread?

Open a topic with an unread icon, read it, and the icon changes to a read icon.

1 hour ago, L4D2Noob said:

Open a topic with an unread icon, read it, and the icon changes to a read icon.

I think that @greek_parea means how to change, or replace the read/unread icon images. 

On 9/19/2020 at 12:46 AM, greek_parea said:

How change icons read & unread?

Have a look at this guide.

 

@Miss_B You know I was just kidding.