Markup is a feature that lets you add drawings, signatures, and text to an image or PDF. There are different tools you can use to achieve this. The other day I found out you can change the opacity of these tools in Markup.
Tools in Markup
The tools in Markup are:
When you use the pencil, highlighter, and marker, you can change the opacity and line thickness. Just tap on the tool, then tap again to make refinements.