-If the line begins with the name of a visual, followed by a colon, then
-that program will only be run on that kind of visual. For example, you can
+Each name in the list has a checkbox next to it: this is a duplicate of
+the \fIEnabled\fP checkbox, and indicates (and controls) whether
+xscreensaver will use this display mode at all. If the box is not
+checked, then this demo will not be run automatically (though you can
+run it explicitly by double-clicking on its name.)
+.TP 4
+.B Arrow Buttons
+Beneath the list are a pair of up and down arrows. Clicking on the down
+arrow will select the next item in the list, and then run it in full-screen
+mode, just as if you had double-clicked on it. The up arrow goes the other
+way. This is just a shortcut for trying out all of the display modes in turn.
+.TP 4
+.B Program Description
+At the top will be a brief description of the program. Below that is a
+text field where you can edit the arguments to the program as xscreensaver
+will invoke it. (Note that most of these programs have their own man pages
+that describe the command-line options they take.)
+.TP 4
+.B Enabled
+The \fIEnabled\fP checkbox controls whether xscreensaver will use this
+display mode at all. This way, all the modes can remain available, but
+you can choose which ones will be automatically run.
+.TP 4
+.B Visual
+The \fIVisual\fP field is where you can select the X visual type that this
+demo will require. If you specify one (other than \fIAny\fP) then the
+program will only be run on that kind of visual. For example, you can