WINDOW is a keyword used in SAP ABAP programming.This tutorial covers its introduction & syntax details. WINDOWBasic formWINDOW STARTING AT x1 y1.Addition… ENDING AT x2 y2EffectDisplays the current secondary list as a modal dialog box (see CALL SCREEN ). The same rules apply as for displaying a list on the full screen, i.e. the page size corresponds to the window size.The left upper edge of the window appears at column x1 and line y1 . If you do not specify the addition ENDING AT , the position of the right lower edge corresponds to the coordinates of the current screen.You can use variables to specify the coordinates.All the functions for secondary lists are supported. These include:Scrolling in the window.Hiding field contents (see HIDE ).Line selection in the window (see AT LINE-SELECTION , …)Set the window title (see SET TITLEBAR )Addition… ENDING AT x2 y2EffectPositions the right lower edge of the window in column x2 and line y2 .You can use variables to specify the coordinates.ExampleDefine a window covering columns 1 to 79 and lines 15 to 23:WINDOW STARTING AT 1 15 ENDING AT 79 23.WRITE ‘Text’.NoteInserts a window on the normal screen .You can insert the windows described above only within the context of list processing, i.e. not until after an interactive event (see AT LINE-SELECTION ).You can use the technique shown in the example below to insert a window containing a list during a dialog (see CALL SCREEN ).ExampleDisplay a list as a modal dialog box:CALL SCREEN 100. “Screen of modal dialog box type* STARTING AT 10 10 “… can be started as* ENDING at 60 15. “… separate window with* “… these additionsIn the flow logic of the screen 100, the processing branches to list processing in the PBO ( Process Before Output ) module (see LEAVE TO LIST-PROCESSING ).Flow logic:PROCESS BEFORE OUTPUT.MODULE LIST.Program:MODULE LIST OUTPUT. LEAVE TO LIST-PROCESSING.* AND RETURN TO SCREEN 0. “Alternative to LEAVE SCREEN* “at endPERFORM OUTPUT. “Output list LEAVE SCREEN.ENDMODULE.