A user can click on a spreadsheet cell to enter edit mode and alter the contents of the cell. Edit mode can be exited through a click and drag maneuver. The click and drag maneuver not only exits edit mode, but also selects a range of cells. The click and drag is performed by depressing a mouse button...http://www.google.com.au/patents/US7237186?utm_source=gb-gplus-sharePatent US7237186 - Exiting a spreadsheet edit mode during a mouse drag operation
