A display system adapted to an aircraft, comprising: at least one first display unit; at least one second display unit; a control unit that is configured to control the at least one first display unit and the at least one second display unit; and a storage unit with a main memory that is configured to store at least one configuration file, the control unit being configured to read the main memory and to read and use the at least one configuration file; characterized in that the at least one configuration file is configured to be used by the control unit for configuration of the at least one first display unit and of the at least one second display unit, wherein the at least one configuration file is configured to define at least one displayable parameter for the at least one first display unit and the at least one second display unit and to comprise at least one default behavior tag that is configured to be associated with the at least one displayable parameter, and wherein the at least one default behavior tag is configured to define a default behavior of the at least one first display unit and the at least one second display unit upon display of the at least one displayable parameter; wherein the storage unit further comprises a secondary memory that is configured to store at least one modified default behavior tag that is adapted to be read and used by the control unit instead of the at least one default behavior tag; and wherein the display system is configured for modifying the at least one default behavior tag by setting a given displayable parameter to a slave mode that is forced for the given displayable parameter and the control unit is further configured to display the given displayable parameter synchronized between the at least one first display unit and at least one second display unit according to the slave mode, and the display system is configured for modifying the given displayable parameter to an un-slave mode that is forced for the given displayable parameter and the control unit is further configured to display the given displayable parameter unsynchronized between the at least one first display unit and at least one second display unit according to the un-slave mode. at least one first display unit; at least one second display unit; a control unit that is configured to control the at least one first display unit and the at least one second display unit; and a storage unit with a main memory that is configured to store at least one configuration file, the control unit being configured to read the main memory and to read and use the at least one configuration file; characterized in that the at least one configuration file is configured to be used by the control unit for configuration of the at least one first display unit and of the at least one second display unit, wherein the at least one configuration file is configured to define at least one displayable parameter for the at least one first display unit and the at least one second display unit and to comprise at least one default behavior tag that is configured to be associated with the at least one displayable parameter, and wherein the at least one default behavior tag is configured to define a default behavior of the at least one first display unit and the at least one second display unit upon display of the at least one displayable parameter; wherein the storage unit further comprises a secondary memory that is configured to store at least one modified default behavior tag that is adapted to be read and used by the control unit instead of the at least one default behavior tag; and wherein the display system is configured for modifying the at least one default behavior tag by setting a given displayable parameter to a slave mode that is forced for the given displayable parameter and the control unit is further configured to display the given displayable parameter synchronized between the at least one first display unit and at least one second display unit according to the slave mode, and the display system is configured for modifying the given displayable parameter to an un-slave mode that is forced for the given displayable parameter and the control unit is further configured to display the given displayable parameter unsynchronized between the at least one first display unit and at least one second display unit according to the un-slave mode.