How to delete handwriting annotations?

While writing using freehand line tool, From touching the pen to lifting the pen is counted as “one annotation”.

I wrote few sentences and now I want to delete them. These are the only ways I found:

  1. For each “one annotation”, select> right click> delete.
  2. Go to annotations pane, select multiple annotations> right click> delete.

If that’s the case, how you guys deal with it? Do you even use okular for handwriting annotations?

In other programs like xournalpp, we generally do it using a rectangular selection tool, just select the region and hit delete, all the objects inside that will get deleted.