Re abuse of chord notation, quoted strings starting with one of the 5 characters ^, _, <, >or @ are valid text annotations, not to be confused with chords eg "D" indicates a D major chord starting at this note, "@D" indicates a letter D to be displayed as text (eg for a section marker) near the associated note, exact location at the discretion of the printing program (the other start symbols are for text to be displayed above, below, left or right of the associated note).