The display of each worksheet can be controlled by several settings and configurations. The worksheet, conceptually, consists of a single continuous two dimensional grid of cells arranged in rows by columns, and Gnumeric, by default, displays a small portion of the worksheet area as a continuous region.
A worksheet is created with the number of rows and columns specified by the preference setting that can be adjusted on the Windows tab of the Preference Dialog (see Section 13.2.7 ― Windows Preferences);
The maximum number of supported rows in a sheet is 16,777,216 and the maximum number of supported columns is 16384. The numbers of rows and columns of a sheet must always be powers of 2.
The size of an existing sheet can be increased through the Resize Sheet dialog accessible through the sheet tab context menu (see Section 4.3.3 ― The Context Menu for Worksheet Tabs) or the Sheet submenu of the Edit menu (see Section 4.2.3 ― The Edit Menu).