TWinControl.TabOrder
From OpenEUO
RW TabOrder : n Indicates the position of the control in its parent's tab order.
TabOrder is the order in which child windows are visited when the user presses the Tab key. The control with the TabOrder value of 0 is the control that has the focus when the form first appears. Initially, the tab order is always the order in which the controls were added to the form and each control has a unique tab-order value within its parent. If you change the TabOrder value of one control to be the same as the value of a second control, the values for all the other controls may change.
