M-q でカーソル下のパラグラフの整形が出来るが、英文の場合は右端が揃わな
いため不格好になる。そんな時は C-u M-q すると右端を揃えた整形を行なって
くれる。

■整形前
(3.1) If you want the Japanese info, type 'make install-jinfo'. If you
have the "install-info" command, the following line will be
automatically added to the "dir" file.  Otherwise, add it by yourself.
■整形後
(3.1) If you want the Japanese info, type 'make install-jinfo'. If you
have  the   "install-info"  command,   the  following  line   will  be
automatically added to the "dir" file.  Otherwise, add it by yourself.