The form parameters are used to link forms to each other and manage a form's functionality on opening.
The set of form's parameters describes the parametes available when the form is called.
Each form parameter has the following properties:
Name - parameter name in the form's object model;
Type- defines the parameter's type. The form's parameters are passed from client to server and back. Because of that, the set of available types is limited by these that are available in the client application;
Key Parameter - a value of a parameter set as key parameter. It is a part of the form's unique composite key. This means that when the system receives a form based on these parameters, it returns a from already open or creates a new one.
Besides custom parameters, the form automatically provides parameters defined by the main atribute's type. The automatically provided parameters are listed in the built-in help.