-This class represents a Windows 95 taskbar icon, appearing in the `system tray' and responding to
-mouse clicks. An icon has an optional tooltip. This class is only supported for Windows 95/NT.
+This class represents a taskbar icon. A taskbar icon is an icon that appears in the `system tray' and responds to mouse clicks, optionally with a tooltip above it to help provide information.
+
+\wxheading{X Window System Note}
+
+Under X Window System, the window manager must support either
+the \urlref{System Tray Protocol by freedesktop.org}{http://freedesktop.org/Standards/systemtray-spec}
+(WMs used by modern desktop environments such as GNOME >= 2, KDE
+>= 3 and XFCE >= 4 all do) or the older methods used in GNOME 1.2 and
+KDE 1 and 2. If it doesn't, the icon will appear as a toplevel window on
+user's desktop.
+
+Because not all window managers have system tray, there's no guarantee that
+wxTaskBarIcon will work correctly under X Window System and so the applications
+should use it only as an optional component of their user interface. The user
+should be required to explicitly enable the taskbar icon on Unix, it shouldn't
+be on by default.
+