Gilles, I would like to learn the reason for using \breathe and \bar "||" in the LilyPond snippet entitled "Hymn template" [1], Are they intended to communicate two different things, or was it merely a stylistic decision to use \bar "||" at the end of a system and \breathe in the middle?
Also, why not use \bar "|." at the end? I want to revise this snippet to use \caesura (which is still under development) to end phrases, but I want to stay faithful to your intent. Thanks, Dan [1] https://lsr.di.unimi.it/LSR/Item?id=703