$ xprop -font fixed POINT_SIZE
POINT_SIZE = 120

$ xprop -root CUT_BUFFER0
CUT_BUFFER0(STRING) = "xprop -root CUT_BUFFER0\n"

$ xprop -root CLIPBOARD
CLIPBOARD:  not found.

$ xprop -root PRIMARY
PRIMARY:  not found.

$ xprop -root CUT_BUFFER0 | cut -c23-
"NG) = \"xprop -root CU"

$ xprop # then click on a window
WM_STATE(WM_STATE):
                window state: Normal
                icon window: 0x0
WM_PROTOCOLS(ATOM): protocols  WM_DELETE_WINDOW
WM_CLIENT_LEADER(WINDOW): window id # 0x1c00014
WM_LOCALE_NAME(STRING) = "C"
WM_CLASS(STRING) = "xterm", "XTerm"
WM_HINTS(WM_HINTS):
                Client accepts input or input focus: True
                Initial state is Normal State.
WM_NORMAL_HINTS(WM_SIZE_HINTS):
                user specified size: 583 by 342
                program specified size: 583 by 342
                program specified minimum size: 25 by 17
                program specified resize increment: 6 by 13
                program specified base size: 19 by 4
WM_CLIENT_MACHINE(STRING) = "sunshine"
WM_COMMAND(STRING) = { "xterm", "-geometry", "94X26", "-cr", "red", "-fg", "darkgreen", "-bg", "#b0c0d0", "-l", "-j", "-s", "-aw", "-rw", "+ls", "-rv", "-si", "-sk", "-sb", "-sl", "2000" }
WM_ICON_NAME(STRING) = "xterm"
WM_NAME(STRING) = "xterm"