--- Required attributes ---
color -> RED, GREEN, BLUE, WHITE, BLACK, PURPLE, ORANGE ... or a hexcolor #FAFACC
style -> AUTO, ORF, INTERVAL, ARROW, BOOKMARK
data -> the id of the data (filled in when clicking Add)
--- Optional attributes ---
label -> text (the label for the track, left)
scale -> scaling factor
offset -> number multiple tracks may be shifted vertically
height -> number the height of the track in pixels
Lines starting with the # symbol are comments.