Add other user-definable events

[dado330]

First of all, thanks for your work. This is an amazing project.

My problem and suggestion

I need to create a complex graph of a project. (see below)

I want every cell to be linked to other documents inside a website.
However, at the same time, when a user selects a cell the diagram should highlight the ongoing and outgoing cells to be more user-friendly on where the data is coming from and going to. (while not opening the link obviously)

My first solution was to create a copy of the diagram for each cell and work from there but I found three major problems:

• The resulting file would be quite big (around 10 MB)
• It is not robust against changes in the original graph
• very long to program all of the cells in each graph

The only solution I see is to add other user-definable events like mouse hover or double click but I'm open to suggestions.