Eraser tool
Summary
Deleting content out of a lab book is normally not desired or in the analog version not possible. Sometimes happy little accidents happen though. How do we think about a tool which let's you delete content from the book which was placed in the last 3-5 mins? As we save timestamps for every object that should be doable.
Implementation ideas
My idea is to gray out all none erasable content and show everything which is erasable in full color, this should be implementable relatively easily using a filter.