Calc Guide

Choosing options for Calc
In the Options dialog, click the + sign to the left of OpenOffice.org
Calc on the left-hand side. A list of subsections drops down.
General options for Calc
In the Options dialog, choose OpenOffice.org Calc > General.
Figure 322: Selecting general options for Calc
Metrics section
Choose the unit of measurement used in spreadsheets and the default
tab stops distance.
400 OpenOffice.org 3.x Calc Guide