- * repeat height is 17 * (2 + 15) = 289 + annotationHeight = 507
- * make canvas height 2 * 289 + 3 * charHeight so just enough to
- * draw 2 widths and the first sequence of a third
+ * repeat height is 17 * (2 + 15) = 289 + 3 + annotationHeight = 510
+ * make canvas height 2 of these plus 3 charHeights
+ * so just enough to draw 2 widths, gap + scale + the first sequence of a third