Based on the class library widget VCA::LWidget the abstract class of the terminal widget VCA::PrWidget has been formed. And on its basis, the implementation of primitives of basic widgets is formed, which forms the library of basic widgets, which is created by the module at initialization. Values of the properties of the basic widgets, also can be stored in the database (tables of the widget's library), forming the desired templates. In addition, the basic library of primitives can be redefined by the extended primitives from the modules of the presentation(visualization) interfaces, for which the basic ones are not enough. But, in this case, it must be taken in the account that such action — the way to an incompatibility between the modules of the presentation(visualization) interfaces!