-Text inside the @samp{%<} and @samp{%>} specifiers will get the special
-@code{balloon-help} property set to @code{gnus-balloon-face-0}. If you
-say @samp{%1<}, you'll get @code{gnus-balloon-face-1} and so on. The
-@code{gnus-balloon-face-*} variables should be either strings or symbols
-naming functions that return a string. Under @code{balloon-help-mode},
-when the mouse passes over text with this property set, a balloon window
-will appear and display the string. Please refer to the doc string of
-@code{balloon-help-mode} for more information on this.
+Text inside the @samp{%<<} and @samp{%>>} specifiers will get the
+special @code{balloon-help} property set to @code{gnus-balloon-face-0}.
+If you say @samp{%1<<}, you'll get @code{gnus-balloon-face-1} and so on.
+The @code{gnus-balloon-face-*} variables should be either strings or
+symbols naming functions that return a string. When the mouse passes
+over text with this property set, a balloon window will appear and
+display the string. Please refer to @ref{(emacs)Help Echo} (in GNU
+Emacs) or the doc string of @code{balloon-help-mode} (in XEmacs) for
+more information on this.