Using Icons To Replace Topic Titles

General General Questions
1

I would like to show the magnifying glass Icon for the search button. Where can I find out how to do this?

Thank you

2

I would like to show the magnifying glass Icon for the search button. Where can I find out how to do this?

Thank you

Could you please give more details? What version do you have? What theme?

3

I am using the responsive theme Modern. 4.9.3 on a live site and 10.1 on a demo site.

Thank you