Abstract: The invention concerns a project management tool comprising a plurality of terminals communicating with a central server, at least one of the terminals including: means (11) for defining project models and for inserting them in a model library (6a), each project model including a list of step models, one step representing a set of tasks contributing to the achievement of the project; means (15) for defining a scenario defining links between a source model and a target model, each link being associated with a condition concerning the properties of the source model of the link; means (21) for generating projects from project models and steps from step models; and means (30) for updating and display the state of the project steps, and for generating a new step from the target model of a scenario link, when the condition associated with the link is fulfilled.

Abstract: Screwing device which incorporates a screw charger. The device comprises a tube which encloses axially aligned screws and which is capable of being made integral with a maneuvering shaft. The tube comprises, at its free end, rings for blocking the head of a screw and allowing only the threaded part of the screw to protrude. The screw is brought into this position with the aid of an axial thrust shaft which can be maneuvered by the user. For rotationally blocking the screw in the screwing position, the tube comprises at least two longitudinal slots which confer on the free end a certain transverse elasticity permitting a screw to be brought into the screwing position, and ensure that the screw is not driven in rotation and is released when the limit torque is reached.