TextMesh Pro
TextMesh Pro is a brilliant asset which makes UI text crispy and crystal clear, supports formatting and is highly performant at runtime. It's a must-have addition to any Unity project, especially when it's completely free.
Popup Module comes with a support for TextMesh Pro and it's included with Tutorial Master.
If you go to the Component Menu, you will now see a new item “UGUI Popup Module (TextMesh Pro)”. Upon adding it you will see that it looks exactly same as your usual Popup Module. The difference is that it now accepts TextMeshPro UGUI Text instead. From there, you simply attach it like any other Module component to Stage.
You can now take advantage of TextMesh Pro features such as rich text!