+%% . There must be a minimum distance between the octavation line and the
+%% topmost staff line, taking into account the height of the closing
+%% vertical dashed line.
+ %
+%% . Octavation lines broken across staves must always start with `8va'
+%% (or something similar).
+ %
+%% . The `8va' should be slightly offset to the left.
+ %
+%% . The final vertical dashed line of the octavation line should be offset
+%% to the right.
+ %
+%% . Octavation lines for `8va bassa' must be below the staff, not above.
+ %
+%% . The `8va bassa' string is far too long for short octavation lines.
+%% LilyPond should select between `8va bassa', `8ba', and `8', depending
+%% on the available horizontal space (and the octavation style selected
+%% by the user). The same holds for `8va' and `15ma'.