control_data - Control data
In order to make use of different control specific features not supported by the GUI frame work, specific control options can be defined here. The way to pass those options depends on the implementation of the user control, which receives all optional settings in a single options string. In general, it is suggested to use keyword options separated by line breaks, which increases readability for optional settings. Options supported by a specific user control have to be defined in the user control documentation, which should be delivered with the user control installation.
Type: char