\version "2.11.65"
#(ly:set-option 'debug-skylines #t)
\relative c'' {
   \override TextScript #'extra-offset = #'( 0.0 . -4.0)
%   \override TextScript #'avoid-slur = #'inside
    c2*1/2( s4^\markup {\natural} d4.) c8
}