A real data exchange format, giving a longer graph...
The choice of data exchange format via an HTML link strongly limits the possible length of the charts.
Some pieces have to be "tweaked" for a long time, to manage to put everything, at the risk of losing the logical and readable side...
The Html exchange format is a false good idea, it would be more logical to have an XML type format with a clean ending, allowing the application to be opened in one click.
This would also simplify the exchange between different platforms.