An electronic display device for a glass cockpit of a vehicle control system, said glass cockpit comprising a plurality of screens (E 1, E 2, E 3,..., E N), at least two screens of the plurality of screens being able to simultaneously display separate video streams respectively associated with different display formats, the display device comprising, for each screen of at least part of the plurality of screens, an interactive display configuration tool (O 1, O 2, O 3,..., O N), the device being configured, for each screen (E 1, E 2, E 3,..., E N) of said at least one part, to: - display the configuration tool (O 1, O 2, O 3,..., O N) in at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N) of said screen, characterized in that the configuration tool comprises a plurality of user entry symbols, each symbol being associated with a display configuration corresponding to the combination of a display format (F1, F2, F3,... F10), a display window size (E 1 W 1, E 1 W 2, E N W 1, E N W 2) of said display format relative to the size of said screen, and a location of said display window of the display format within said screen, - modify the display configuration of said screen if a user entry symbol is selected that is different from the user entry symbol corresponding to the current display configuration of said screen, the display device being configured to display the interactive display configuration tool continuously and/or temporarily on the video stream(s) being displayed on said screen, and wherein: - the surface of said at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N) is strictly smaller than half of the surface of each screen (E 1, E 2, E 3,..., E N) of the plurality of screens, and - the location of said at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N), on said screen, is different from the location of a zone dedicated to the display of information essential for the control of the vehicle, the location of said at least one predetermined zone depending on the current display configuration of said screen. the display device comprising, for each screen of at least part of the plurality of screens, an interactive display configuration tool (O 1, O 2, O 3,..., O N), the device being configured, for each screen (E 1, E 2, E 3,..., E N) of said at least one part, to: - display the configuration tool (O 1, O 2, O 3,..., O N) in at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N) of said screen, characterized in that the configuration tool comprises a plurality of user entry symbols, each symbol being associated with a display configuration corresponding to the combination of a display format (F1, F2, F3,... F10), a display window size (E 1 W 1, E 1 W 2, E N W 1, E N W 2) of said display format relative to the size of said screen, and a location of said display window of the display format within said screen, - modify the display configuration of said screen if a user entry symbol is selected that is different from the user entry symbol corresponding to the current display configuration of said screen, - display the configuration tool (O 1, O 2, O 3,..., O N) in at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N) of said screen, characterized in that the configuration tool comprises a plurality of user entry symbols, each symbol being associated with a display configuration corresponding to the combination of a display format (F1, F2, F3,... F10), a display window size (E 1 W 1, E 1 W 2, E N W 1, E N W 2) of said display format relative to the size of said screen, and a location of said display window of the display format within said screen, - modify the display configuration of said screen if a user entry symbol is selected that is different from the user entry symbol corresponding to the current display configuration of said screen, the display device being configured to display the interactive display configuration tool continuously and/or temporarily on the video stream(s) being displayed on said screen, and wherein: - the surface of said at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N) is strictly smaller than half of the surface of each screen (E 1, E 2, E 3,..., E N) of the plurality of screens, and - the location of said at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N), on said screen, is different from the location of a zone dedicated to the display of information essential for the control of the vehicle, the location of said at least one predetermined zone depending on the current display configuration of said screen. - the surface of said at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N) is strictly smaller than half of the surface of each screen (E 1, E 2, E 3,..., E N) of the plurality of screens, and - the location of said at least one predetermined zone (Z 1, Z 2, Z 3,..., Z N), on said screen, is different from the location of a zone dedicated to the display of information essential for the control of the vehicle, the location of said at least one predetermined zone depending on the current display configuration of said screen.