the first client of X) and manage them (reparent them, create window
decorations, etc.)
. When new windows are created, manage them
-. Handle the client’s `_WM_STATE` property, but only the `_WM_STATE_FULLSCREEN`
+. Handle the client’s `_WM_STATE` property, but only `_WM_STATE_FULLSCREEN` and
+ `_NET_WM_STATE_DEMANDS_ATTENTION`
. Handle the client’s `WM_NAME` property
. Handle the client’s size hints to display them proportionally
. Handle the client’s urgency hint