On a graphical display, tiny arrow images in the window fringes
indicate truncated and continued lines (@pxref{Fringes}). On a text
-terminal, a @samp{$} in the rightmost column of the window indicates
+terminal, and on a graphical display when @code{fringe-mode} was
+turned off, a @samp{$} in the rightmost column of the window indicates
truncation; a @samp{\} on the rightmost column indicates a line that
wraps. (The display table can specify alternate characters to use
for this; @pxref{Display Tables}).
@vindex no-special-glyphs@r{, a frame parameter}
@item no-special-glyphs
If this is non-@code{nil}, it suppresses the display of any truncation
-and continuation glyphs (@pxref{Truncation}) for all buffers displayed
-by this frame. This is useful to eliminate such glyphs when fitting a
-frame to its buffer via @code{fit-frame-to-buffer} (@pxref{Resizing
-Windows}).
+(@pxref{Truncation}) and continuation glyphs for all the buffers
+displayed by this frame. This is useful to eliminate such glyphs when
+fitting a frame to its buffer via @code{fit-frame-to-buffer}
+(@pxref{Resizing Windows}). This frame parameter has effect only for
+GUI frames shown on graphical displays, and only if the fringes are
+disabled. This parameter is intended as a purely-presentation
+feature, and in particular should not be used for frames where the
+user can interactively insert text, or more generally where the cursor
+is shown. A notable example of frames where this is used is tooltip
+frames (@pxref{Tooltips}).
@end table