Opening a spreadsheet

You can open a spreadsheet with the Spreadsheet ▸ New Spreadsheet menu item or with the key Alt+T.

When you open a new spreadsheet, a configuration screen with the following options appears:

Variable: — Here you can specify a variable in which the spreadsheet will be saved as a matrix.
Rows, Columns: — Here you can specify the number of rows and columns in the spreadsheet.
Eval: — If checked, then the spreadsheet will be re-evaluated every time you make a change to it. (You can always re-evaluate the spreadsheet by clicking the eval button on its menu bar.)
Distribute: — If checked, then entering a matrix will distribute the contents across an appropriate array of cells, otherwise the matrix will be put in one cell.
Landscape: — If checked, the graphical representation of the spreadsheet will be displayed below the spreadsheet, otherwise it will be displayed to the right of the spreadsheet.
Move right: — If checked, the cursor will move to the cell to the right of the current cell when data is entered, otherwise it will be moved to the cell below the current cell.
Spreadsheet: — If checked, the spreadsheet will be formatted as a spreadsheet, otherwise it will be formatted as a matrix.
Graph: — If checked, the graphical representation of the spreadsheet will be displayed.
Undo history: — Here you can specify how many undo’s can be performed at a time.

The configuration screen can be reopened with the Edit ▸ Configuration ▸ Cfg window menu attached to the spreadsheet.