The Format Menu

Format -> Plot...

Opens the Custom Curves Layout dialog.

Format -> Axes...

Opens the 2D Plot Settings dialog, allowing you to change the axes, grid and canvas frame settings for the active plot layer.

Format -> Title...

Opens a text dialog, allowing you to modify the plot title and its properties (color, font, alignement).

Format -> Column options...

Opens the Column options dialog. Enabled only if the active window is a spreadsheet.

Format -> Set column values...

Opens the Set Column Values dialog. Enabled only if the active window is a spreadsheet.

Format -> Columns...

Opens an input dialog, allowing you to change the number of columns for the active spreadsheet.

Format -> Rows...

Opens an input dialog, allowing you to change the number of rows for the active spreadsheet.