Implementing system lines
In many scores I found rit. - - - etc,which should be system-wide. There are lots of similar solid or dotted system lines, including system-wide hairpins (see Kodaly's Peacock Variations). Unfortunately, Musescore doesn't have such lines, and we have to enter text dashes to simulate a system text line. In Musicxml, these lines are placed either at part 1, or at both part 1 and first violin parts according to the engraving rules; in MNX, they should be put in a global sequence. These lines sometimes also affect the overall playback effect such as a total crescendo or accelerando. Implementing these lines will ease engraving, also ease Musicxml/MNX output for braille translation.