\version "2.19.26"
\markup "default for tie"
{ \set tieWaitForNote = ##t \stemUp \tuplet 3/2 { gis'16 b'~ dis''~ } \stemNeutral <b' dis'' fis'' b''>2 }
\markup "forcing tie down"
{ \set tieWaitForNote = ##t \stemUp \tieDown \tuplet 3/2 { gis'16 b'~ dis''~ } \stemNeutral \tieNeutral <b' dis'' fis'' b''>2 }
\markup "attempt to move the tie by setting Tie.staff-position"
{ \set tieWaitForNote = ##t \stemUp \tieDown \tuplet 3/2 { gis'16 b'~ \override Tie.staff-position = #'(-5 . -5) dis''~ } \stemNeutral \tieNeutral <b' dis'' fis'' b''>2 }