In the same way chromium has the option to group tabs with some identifier (like colors, names...) and hide them if you are not working on that, it would be very useful to have Sumatra do the same.

In particular, in my workflow I switch to a set of files to another set several times along the week, but I don't want to close everything because I lose track of my thoughts. The problem if I don't close everything is that my tab bar is too crowded to read the tabs.

Thanks!