The Free Model (FEM)

A free model (FEM) provides a context-free environment for modeling any kind of objects or systems. You can use it to sketch simple visualizations or create entirely new forms of model by defining your own concepts and graphical symbols through an extension file.

To create a new, empty FEM - Select File > New Model, and choose Free Model.

For information about extending objects from their property sheets, see Extending Objects. For detailed information about all the extension mechanisms available in PowerDesigner, see Customizing and Extending PowerDesigner > Extension Files.

• Sketching Objects with the Free Model
  You can quickly sketch a visualization of any concepts by creating extended objects in a free model and giving them appropriate symbols.
• Creating New Types of Model with the Free Model
  You can define a set of extensions and attach them to a free model to model entirely new concepts.