You can create a matrix by specifying the number of columns.
•Read into Matrix:
Enter a matrix name.
•Number of Columns:
Enter a number to define the length of the matrix.
•Read from DataGrid:
Choose if you will enter the matrix numbers from the DataGrid.
•Read from file: Choose if you will import the matrix from a file. Data must be numeric.
•After creating Matrix, you can uncheck the case Dockable.
This allow you to have Matrix in full window and use file commands, like Export, Print, ....