'System_start_delimiter_engraver
(engraver-description
"System_start_delimiter_engraver"
- "creates a SystemStartDelimiter spanner"
- '(SystemStartDelimiter)
+ "creates a system start delimiter (ie. SystemStart@{Bar,Brace,Bracket@} spanner"
+ '(SystemStartBar SystemStartBrace SystemStartBracket)
'(
)))