You can also display your pets damage and healing. You can choose to display your damage, your damage over time, your healing, your healing over time and your crowd control effects. There are a number of different settings which you can use to customise your use of Combat Text. The default state of Combat Text is off, so if you want to see it you’ll have to enable it in Settings > Interface and under the heading Combat Text.
Combat Text comes with Update 9 (Thieves Guild DLC) in March 2016 to PC/Mac, XBox One and PS4. Combat Text, also called Scrolling Combat Text (SCT), is text and numbers which appear when you enter combat which display the actual damage and healing that you deal and receive.