-create suspended chords. This removes the 3rd step from the chord.
-Append either @code{2} or @code{4} to add the 2nd or 4th step to the
-chord. @code{sus} is equivalent to @code{^3}; @code{sus4} is
-equivalent to @code{.4^3}.
+create suspended chords. This removes the 3rd step from the
+chord. Append either @code{2} or @code{4} to add the 2nd or 4th
+step to the chord. When @code{sus} is followed by either a 2nd or
+4th step, it is equivalent to @code{^3}, otherwise to @code{sus4},
+namely @code{5.4}.