Each text window's last line is a @dfn{mode line}, which describes what
is going on in that window. When there is only one text window, the
mode line appears right above the echo area; it is the next-to-last line
-on the frame. The mode line is in inverse video if the terminal
-supports that, and it starts and ends with dashes.
+on the frame. The mode line starts and ends with dashes. On a
+text-mode display, the mode line is in inverse video if the terminal
+supports that; on a graphics display, the mode line is by default drawn
+with a 3D box appearence, which makes it slightly larger than a normal
+text line (if you don't like that, the 3D appearence can be turned off;
+see @ref{Optional Mode Line}).
Normally, the mode line looks like this: