1\version "2.21.0"
2
3\header{
4  texidoc = "The @code{Completion_heads_engraver} uses dotted
5breve/longa durations if possible."
6}
7
8\new Voice \with {
9  \remove Note_heads_engraver
10  \consists Completion_heads_engraver
11} {
12  \time 7/1
13  c'\maxima d'\breve. e'\breve f'\longa g'\breve a'\maxima b'1
14}
15