To create a matrix with a lasso: press "a".
To create a matrix from a label: double click the colorscale.
To delete a matrix: double click on it.
To pan/zoom: press "alt" and drag / scroll.
To recenter: double click on the background canvas.
Computing the layout...
Force layout using d3.js. Data based on character coappearence in Victor Hugo's Les Misérables, compiled by Donald Knuth.