A system and methods for rapidly incorporating changes to a project is described. An object derived from a frame component container is embedded into a project, with the frame component container being freely changeable as desired. Any changes made to the frame component container are automatically included, by inheritance, into the source files of the project. Preferably, the method synchronizes on a display all instances of the object derived from the frame component container to the frame component container. The development system includes a computer and an interface for creating frame objects having components. Software permits the creation of descendant frame objects from an ancestor frame, propagation of modifications of the ancestor frame to each descendant frame object, notification of the descendant frame objects that its corresponding ancestor frame has been modified, and synchronization on a display of all of the descendant frames with any modifications to the components of the ancestor frame.