Grid controls and GridEdit controls display multiple records. By default, a grid (edit) control contains a Selector object on the left of each record displayed.
A Grid Edit Control is a Grid Control with the read-only property set to false.
This control is a subclass of input control and has some extra properties. It is the only input control that is directly liked to a data source, all other input controls link to data through the column control.
Add: If the Selector column controls is not based on a domain you will need to add Yes/No options to the control (note that the negative option must be first). It would be preferable to define a variable data source, add your options and defaults to the variable, and connect the Selector control to this data source.