Use-Case Diagram “Product Scanning Details”
Requirements
This is the next level of information for a higher-level use case. Depth is a matter of taste... Together supports as many levels as you need.
Note1:
NOTE: This is a shortcut (the little arrow is the key) to the Cashier Actor. This allows you to define entites one time and reuse as many times as needed on other diagrams.
Links To: Actor Cashier
Note2:
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Note2:
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Links To: Use-Case Scan Bar Code
All Outgoing Links
Note Link
to Note Note1 (in Package Diagram Requirements)
Diagram Node Summary
Actor: Imported. The Cashier is the actor responsible for interacting with the customer and the point of sale system, ringing up the sale.
Use-Case: The user shall be able to enter the bar code (UPC) manually should the scan fail.
Use-Case: Note: the document that this is hyperlinked to is in the directory of your installation.
Diagram Node Detail
Actor "Cashier"
Imported from:
Use-Case Diagram Make A Sale
The Cashier is the actor responsible for interacting with the customer and the point of sale system, ringing up the sale.
See Also:  Detailed Documentation
Local Links
Communicates
to Use-Case Scan Bar Code

Use-Case "Enter Bar Code Manually"
The user shall be able to enter the bar code (UPC) manually should the scan fail.
All Outgoing Links
Extends
to Use-Case Scan Bar Code

Use-Case "Scan Bar Code"
Note: the document that this is hyperlinked to is in the directory of your installation. Please re-link the document to get the proper path (via Hyperlink tab and right-click on URL node, choose New, and browse to the document "BarCodeScannerAPI.html").
All Outgoing Links
Hyperlink
to Use-Case Scan Product (in Use-Case Diagram Make A Sale)
URL Links
file://..\samples\java\CashSales\Requirements\BarCodeScannerAPI.html