A drawing system has a computerized appliance having a processor coupled to a data repository, software (SW) executing on the processor, the software providing tools to enable a user to join objects in a display, creating an assembled object, Upon the user selecting to drag a first object in the display in a first direction, the SW monitors geometric features of the first object and of a second object in the display positioned in the first direction, determines compatible join features of the first and second objects, and upon the first and second objects being moved within a preprogrammed threshold distance (TD) greater than zero in the display, provides a join operation, bringing the compatible join features of the first and the second object together, creating an assembled new object.