The Matrix Editor

The matrix editor works in a way similar to a very simple spreadsheet. It contains a grid of editable cells, where the top row and the first column show the cell coordinates.

Matrix Editor

The toolbar on the top allows you to paste values in the matrix and set custom headers. In detail you can:

Matrix Custom Header

With the popup menu that appears clicking with the right button on the grid you can change the size of your matrix and paste values in it. In detail you can:
Matrix Tree