These frame parameters, meaningful only on window system displays, interact with the window manager.
tfor visible, and
iconfor iconified. See Visibility of Frames.
nilvalue specifies the default bitmap icon (a picture of a gnu);
nilspecifies a text icon.
nil, the frame's title is used.
nil, tell Xt to wait for the window manager to confirm geometry changes. Some window managers, including versions of Fvwm2 and KDE, fail to confirm, so Xt hangs. Set this to
nilto prevent hanging with those window managers.
nil, the frame is visible on all virtual desktops on systems with virtual desktops.