Due to the y-axis being reversed the x-axis tick marks are shown only on the top. Need to fix so that the ticks are drawn on the bottom to make sure the logic is correct.
Also need to draw the x-axis tick marks on top and bottom.
Need to draw the y-axis tick marks using the y-axis label array (on boundaries between time series).
Evaluate whether to allow different symbol tables for time series, which will require different files and multiple legends. This might work for a few cases but a large number of tables would be difficult to fit on the view, unless they were reused.
The following enhancements are needed: