+-----------------------------------------------------------------------
+
+ <xscreensaver-text />
+
+ This indicates that this screen saver displays text via the
+ "xscreensaver-text" program.
+
+ In the X11 version, this tag does nothing: the text-related
+ preferences are in the main Screen Saver Preferences window,
+ not in the per-display-mode preferences.
+
+ In the MacOS version, the text-related preferences appear
+ in this pane, and this tag emits those several controls.
+
+-----------------------------------------------------------------------
+
+ <xscreensaver-image />
+
+ This indicates that this screen saver displays images via the
+ "xscreensaver-getimage" program.
+
+ In the X11 version, this tag does nothing: the image-loading
+ and screen-grabbing-related preferences are in the main
+ Screen Saver Preferences window, not in the per-display-mode
+ preferences.
+
+ In the MacOS version, the image-related preferences appear
+ in this pane, and this tag emits those several controls.
+