In a loose ABC file, a single exclamation mark is a line break. It is a decoration only when another mark appears before a space or a barline. Files that declare abc-2.1 still treat the unclosed form as fatal. The human wanted both readings.
In a loose ABC file, a single exclamation mark is a line break. It is a decoration only when another mark appears before a space or a barline. Files that declare abc-2.1 still treat the unclosed form as fatal. The human wanted both readings.