for a ``raised'' effect on window systems, and drawn as the inverse of
the default face on non-windowed terminals. @xref{Display Custom}.
@item header-line
-Similar to @code{modeline} for a window's header line.
+Similar to @code{modeline} for a window's header line. Most modes
+don't use the header line, but the Info mode does.
@item highlight
This face is used for highlighting portions of text, in various modes.
+For example, mouse-sensitive text is highlighted using this face.
@item region
This face is used for displaying a selected region (when Transient Mark
mode is enabled---see below).
@item secondary-selection
-This face is used for displaying a secondary selection (@pxref{Secondary
+This face is used for displaying a secondary X selection (@pxref{Secondary
Selection}).
@item bold
This face uses a bold variant of the default font, if it has one.
@item fixed-pitch
The basic fixed-pitch face.
@item fringe
-The face for the fringes to the left and right of windows under X.
+@cindex fringe
+The face for the fringes to the left and right of windows on graphic
+displays. (The fringes are the narrow portions of the Emacs frame
+between the text area and the frame's border.)
@item scroll-bar
-This face determines the colors of the scroll bar.
+This face determines the visual appearance of the scroll bar.
@item border
This face determines the color of the frame border.
@item cursor