"Hymn template" snippet

[Dan Eble]

"Hymn template"
https://lsr.di.unimi.it/LSR/Item?id=703

I don't see any way to find the author of a snippet.  I'd like to ask the 
author of this snippet about the reason for using \breathe and \bar "||".  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?

I would like to revise it to use \caesura but stay faithful to the original 
intent.

Thanks,
Dan