@* and @/: Generate and Allow Line BreaksThe @* command forces a line break in both the printed manual and
in Info.  The @/ command allows a line break (printed manual only).
  
Here is an example with @*:
     This line @* is broken @*in two places.
     
produces
     This line
     is broken
     in two places.
     
  Do not write an @refill command at the end of a paragraph
containing an @* command; it will cause the paragraph to be
refilled after the line break occurs, negating the effect of the line
break.  See Refilling Paragraphs.
  
The @/ command can be useful within a url
(see @uref), which tend to be long and are otherwise
unbreakable.  For example:
     The official Texinfo home page is on the GNU web site:
     @uref{http://www.gnu.org/@/software/@/gnu/@/texinfo}.
     
produces
     The official Texinfo home page is on the GNU web site:
     http://www.gnu.org/software/gnu/texinfo.
     
Without the @/ commands, TeX would have nowhere to
break the line.  @/ has no effect in the online output.