+/* On which line would 'pitch' appear on 'staff'.
+ *
+ * Lines are numbered with line 0 as the top full line of the staff
+ * and increasing downward. So line values less than 0 will appear as
+ * ledger lines above the staff while line values greater than 4 will
+ * appear on ledger lines below the staff.
+ *
+ * A line value of 2 will be centered verticall on the staff.
+ *
+ * For notes appearing on a space, the line value will be half-way
+ * between two integers. */