Astah User's Guide
Astah's DFD support two notations - DeMarco or and Gane/Sarson. There are three ways to switch the notation.
Select [External Entity] from the Tool palatte and click on a diagram.
Notation of External Entity varies depending on its number.
There are two ways to create ProcessBox.
There are two ways to add ID to ProcessBox.
There are two ways to add an Operator to ProcessBox.
Right-click on the ProcessBox on DFD and select [Convert to UseCase].
Select [DataStore] from the Tool palatte and click on a diagram.Notation of DataStore varies on the number.
An Anchor is a symbol to connect to a Process in another Data Flow Diagram.
Select [DataFlow] from the Tool palatte and click objects.
Select [Convert to EREntity] from the DataFlow's Pop-up menu in the Structure Tree.