Defining and maintaining process flows is supported by an interactive GUI-based flow editor (Figure 5.7). In the left part of the window, a hierarchy browser provides direct access to all levels of the flow description, the right part shows details of the currently selected entry. Figure 5.8 shows the selection window for all available simulation tools.
Figure 5.7:
Graphical flow editor for hierarchical flow
definition: hierarchy browser/editor and step editor.
Figure 5.8: Graphical tool selection interface for available
simulators in VISTA/SFC.
The flow editor is implemented as a layer atop the flow programming interface (see Section 5.9). It operates independently of any file representation, using directly the interface's object-encapsulation.