Damping sign using a balloon help

Without a breakable line.

\version "2.24"

%% http://lsr.di.unimi.it/LSR/Item?id=1096

% For version "2.19" and higher: dam = #(define-event-function () () etc.

\paper { tagline = ##f }

\new Voice \with { \consists "Balloon_engraver" }

{ <a 
  -\tweak annotation-balloon ##f
  -\balloonText #'(6 . -1) \markup\musicglyph "pedal.*">1 
  R1 
}