The primary MicroStation-based Bentley HAMMER element entities are all implemented using native MicroStation elements (the drawing symbols are standard MSTN objects).These elements have feature linkages to define them as HAMMER objects.

This means that you can perform standard MicroStation commands (see MicroStation Commands) as you normally would, and the model database will be updated automatically to reflect these changes.

It also means that the model will enforce the integrity of the network topological state, which means that nodes and pipes will remain connected even if individual elements are moved. Therefore, if you delete a nodal element such as a junction, its connecting pipes will also be deleted since their connecting nodes topologically define model pipes.

Using MDL technology ensures the database will be adjusted and maintained during Undo and Redo transactions.

See “The MicroStation Environment Graphical Layout”.