When there is a big review a developer may go to the review and do a part of it, then leave and come back later. Yet it may have click on some file/diff without having fully review them.

When he returned bitbucket may not display those files as bold anymore since the user did click on them once.

I need a flag such as "Accepted" on each file/diff so that the developer can say "I did this file or diff" which would be a better way to track where he is at in its review than if the file / diff has or not been seen by the reviewer in question which is not trustable.