EWMH supported

_NET_SUPPORTED set to all ewmh atoms
_NET_CLIENT_LIST kept updated when new clients are added or removed
_NET_NUMBER_OF_DESKTOPS set on start to 0
_NET_DESKTOP_GEOMETRY, no large desktops, set to screen geometry
_NET_DESKTOP_VIEWPORT, no large desktops, set to (0, 0) for each desktop
_NET_CURRENT_DESKTOP, always 0, single desktop
_NET_DESKTOP_NAMES, set to wm name
_NET_ACTIVE_WINDOW, kept updated to focused window
_NET_WORKAREA, set to screen geometry minus static bar height
_NET_SUPPORTING_WM_CHECK set on start
_NET_VIRTUAL_ROOTS, disregarded, no virtual roots
_NET_DESKTOP_LAYOUT, not set by WM, irrelevant because wm handles placement and reconfigures
_NET_SHOWING_DESKTOP, showing desktop only is not implemented, this is theoretically supported but unused

EWMH window properties

_NET_WM_NAME WM will display this as a window name if set.
_NET_WM_VISIBLE_NAME, disregarded in favor of _NET_WM_NAME
_NET_WM_DESKTOP Never changed from 0
_NET_WM_WINDOW_TYPE respects _NET_WM_WINDOW_TYPE_NORMAL and _NET_WM_WINDOW_TYPE_DIALOG to determine transients/popups
_NET_WM_STATE tries go gain users attention on _NET_WM_STATE_DEMANDS_ATTENTION,
_NET_WM_STATE_FULLSCREEN draws/undraws fullscreen,
_NET_WM_STATE_MODAL treats as transient and floats on parent
_NET_WM_ALLOWED_ACTIONS, disregarded
_NET_WM_STRUT & _NET_WM_STRUT_PARTIAL disregarded, wm controls placement
_NET_WM_ICON_NAME, disregarded, wm doesn't display icons
_NET_WM_VISIBLE_ICON_NAME same as above
_NET_WM_ICON_GEOMETRY, same as above
_NET_WM_ICON same as above
_NET_WM_HANDLED_ICONS same as above
_NET_WM_PID disregarded, no kill implemented, maybe in the future
_NET_WM_USER_TIME disregarded, no inactive timers
_NET_FRAME_EXTENTS honored, will update on frame updates
_NET_WM_OPAQUE_REGION, disregarded,
_NET_WM_BYPASS_COMPOSITOR, disregarded

_NET_WM_STATE, see above
_NET_ACTIVE_WINDOW, will try to draw the users attention to the desktop and window wanting attention
_NET_SHOWING_DESKTOP disregarded as of now
_NET_CLOSE_WINDOW will request window close on target
_NET_WM_MOVERESIZE disregarded, wm handles placement
_NET_MOVERESIZE_WINDOW same as above
_NET_REQUEST_FRAME_EXTENTS gives back extents
_NET_RESTACK_WINDOW, disregarded
_NET_CURRENT_DESKTOP, disregarded, only one desktop
_NET_NUMBER_OF_DESKTOPS, disregarded, statically set
_NET_DESKTOP_GEOMETRY, disregarded, geometry is fixed to screen geometry
_NET_DESKTOP_VIEWPORT, disregarded, viewport is fixed