The program-global constant space has the data type c, length 1, and contains a blank character.
Within the implementation of every instance method, an implicitly created local reference variable called me is available, which points to the instance in which the method is currently being executed. The static type of me is the class in which the instance method is implemented.
During object creation, me also points to the instance of the generated subclass during the execution of an instance constructor of a superclass that has been called using super->constructor. In the instance constructor of the superclass, or in methods that have been called by the instance constructor, specifying me-> with the method call has no effect. Instead, the method implementations of the superclass are always called.
It is possible to access the data object screen during screen processing in dialog modules. screen is a structure in which the components correspond to the attributes of a screen element. You can use the screen structure to set the attributes of screen elements at the event PBO in the ABAP program. The structure screen and its use are described under LOOP AT SCREEN.
As of release 6.20, the structure screen is described by the eponymous data type SCREEN in the ABAP Dictionary. For release 6.10, the structure was defined by the type syscr_screen of the type group SYSCR. Before release 6.10, it was created internally using a bound data type.