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