Matrex is an IDE

One of the major differences from spreadsheets is that Matrex is an IDE.
When you open Matrex (with a project) the GUI looks more like a development tool than a spreadsheet.


It contains:
To see a matrix, presentation or chart you open its viewer, using the popup menu in the tree or double-clicking it.
To change an item (matrix, function, presentation, chart, timer) you open its editor using the popup menu on it.
To get other functionalities (get info on the item, comment it, rename it, etc.), you use the same popup menu in the tree.

This makes things quite different from a classic spreadsheet: