These are general properties common to nearly all controls.
If set to True then channels can be dropped onto he control and the control will reconfigure itself to display the new channels.
If set to True then mouse and keyboard input will be accepted by the control; if set to False then mouse and keyboard input will be ignored by the control.
This property specifies the order in which data is entered into controls by the user. After entering a value, the user will press either ENTER or TAB, the new value will be accepted and the focus will move to the next control in sequence.
The next control is the control with the next TabIndex in numerical order.
If set to false then the control will not be displayed and will not accept any user input. This can be used from a sequence to hide parts of the display which are not currently appropriate.
This property is particularly useful with the Frame control. If a Frame control has visible set to False then all controls within the Frame will also be made invisible.