
Design Recovery
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Screen Flow Diagram for WWCUSTS
The screen flow diagram is an extended form of the UML Activity Diagram. It displays the screen flow
sequence for a program. The types of screens it displays are:
Screen Flow Diagram Legend
1. Subfile (Screen with a dependent grid)
2. Update capable screen
3. Display only screen
4. Repeated node
Refer to the Screen Flow Diagram Legend for this.
Screen Flow Diagram with I/O Files
The 'Show/Hide Files' toggle icon, placed next to legend dropdown, displays file(s) used by the
screen. The files can be the primary files, i.e. the one primarily being maintained by the function, and
the secondary files, which the screen refers to show the descriptors.
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