In my workflow i have a few sample problems and it’s answer as children for each document. Now, i extensively use the collapse feature to hide the lengthy answers and be able to read the main theory of the topics.
However, when studying, often i forget to collapse back the rem. Now, when i get back to the document, the clutter caused by unfolded answers get annoying.
A power-up tag that automatically collapse rems on close app / changing document would be great. 