1. A method for implementing executable software in one or more display equipment systems, the method comprising: producing said executable software by an aeronautical software application development workbench handling production of a graphical human-machine interface on the one or more display equipment systems, said aeronautical software application development workbench comprising computer means processing software tools for creating, simulating, or integrating graphical functions or “widgets” and logic functions for modifying content of the graphical functions according to incoming events on the one or more display equipment systems, said widgets are described in a definition file; and installing said executable software in said one or more display equipment systems, wherein the aeronautical software application development workbench includes a single graphical editor for designing said executable software, said graphical editor producing a structured functional description language which includes a definition of each widget contained in the definition file; a definition of functional capabilities of said widgets by associating consumed variables or “input plugs” with modifiable attributes of said widget, the “input plug” is a specific datum used to dynamically modify one or more graphical attributes of said widget; and by associating produced variables or “output plugs” with notifications of events produced by said widget, the “output plug” is a datum signaling an equipment system state change request.