After using highlights more extensively I noticed that it is sometimes really hard to properly mark what you want to highlight, particularly when the beginning or the ending of the highlight is at the border of the e-reader.
My suggestion is the addition of a small panel with six buttons, when a marker is selected, the panel appears. The six buttons are the following:
- move marker one line back
- move marker one word back
- move marker one sign back
- move marker one sign forward
- move marker one word forward
- move marker one line forward
Here is a mockup I made for the panel, the second design includes an optional "Save Highlight" button in the middle.
I really hope my suggestion gets implemented, as highlighting currently is very frustrating at times