_NET_FRAME_EXTENTS(CARDINAL) = 1, 1, 18, 5
WM_STATE(WM_STATE):
                window state: Normal
                icon window: 0x0
_NET_WM_ALLOWED_ACTIONS(ATOM) = _NET_WM_ACTION_CLOSE, _NET_WM_ACTION_MAXIMIZE_HORZ, _NET_WM_ACTION_MAXIMIZE_VERT, _NET_WM_ACTION_CHANGE_DESKTOP, _NET_WM_ACTION_STICK, _NET_WM_ACTION_SHADE
_NET_WM_DESKTOP(CARDINAL) = 1
_WIN_WORKSPACE(CARDINAL) = 1
_WIN_STATE(CARDINAL) = 0
_NET_WM_STATE(ATOM) = 
WM_PROTOCOLS(ATOM): protocols  WM_DELETE_WINDOW
WM_CLASS(STRING) = "xv", "XVroot"
WM_HINTS(WM_HINTS):
                Client accepts input or input focus: True
                bitmap id # to use for icon: 0x400000c
                bitmap id # of mask for icon: 0x400000e
WM_NORMAL_HINTS(WM_SIZE_HINTS):
                user specified size: 480 by 270
                program specified maximum size: 2624 by 1200
WM_ICON_NAME(STRING) = "xv"
WM_NAME(STRING) = "xv 3.10a(PNG) <unregistered>"
WM_COMMAND(STRING) = { "xv" }

and here's one for fceu:

WM_ICON_NAME(STRING) = "FCE Ultra"
WM_NAME(STRING) = "FCE Ultra"
_NET_FRAME_EXTENTS(CARDINAL) = 1, 1, 18, 5
WM_STATE(WM_STATE):
                window state: Normal
                icon window: 0x0
_NET_WM_ALLOWED_ACTIONS(ATOM) = _NET_WM_ACTION_CLOSE, _NET_WM_ACTION_CHANGE_DESKTOP, _NET_WM_ACTION_STICK, _NET_WM_ACTION_SHADE
_NET_WM_DESKTOP(CARDINAL) = 0
_WIN_WORKSPACE(CARDINAL) = 0
_WIN_STATE(CARDINAL) = 0
_NET_WM_STATE(ATOM) = 
WM_NORMAL_HINTS(WM_SIZE_HINTS):
                program specified minimum size: 614 by 448
                program specified maximum size: 614 by 448
WM_PROTOCOLS(ATOM): protocols  WM_DELETE_WINDOW
WM_CLASS(STRING) = "SDL_App", "SDL_App"
WM_HINTS(WM_HINTS):
                Client accepts input or input focus: True