How to enable Afloat for X11 windows?

[mrkapqa]

Hello ,

thank you very much for this wonderful app, as it helps me a great deal to leave my desktop less cluttered and to be more productive.

Would like to know if it possible to enable this afloat feature also for X11 windows , because my favorite video player MPV is stuck at earlier version and hence therefore has no stay-on-top yet inbuilt;
i would like to resort to afloat, but it seems to work for quicktime 7 and other apps, but not for X11 (Xquartz) apps.