What is ALT in sequence diagram?
alt is used to describe alternative scenarios of a workflow. Only one of the options will be executed. opt is used to describe optional step in workflow. For example, for online shop purchase sequence diagram you may use opt to describe how user can add gift wrapping if she wishes.
How do you use Alt fragments in sequence diagrams?
Select Alt. Press on the blank area of the diagram and drag to cover the Person and ATM Machine lifeline. Draw a message from ATM Machine lifeline to Person lifeline in the upper compartment of the alternative combined fragment. Name it as Ask for password.
How do I resize ALT in Visio?
The alternative fragment at Visio contains two rectangle: upper one and lower one. Just click at condition text and resize individual rectangle. The outer rectangle will auto-resize to accommodate both of them. Thanks.
What are fragments in sequence diagram?
A fragment in a sequence diagram is a rectangular frame drawn over part of the diagram. They represent conditional structures that affect the flow of messages. These frames are known as combined fragments in the UML specification and the container is known as the interaction operand.
How do you show multiple threads in a sequence diagram?
You can use a “par” fragment to model multiple synchronous calls being executed in parallel. The fragment consists of a rectangle with the label “par”. The rectangle is divided into multiple boxes, each representing a thread of execution.
How do I change dimensions in Visio?
Select More Shapes > Visio Extras > Dimensioning-Architectural. Drag a dimension shape onto the drawing page, and place it near the shape you want to measure….
- Select View > Task Panes > Size & Position.
- Select a shape.
- Enter new values for Width or Height.
- Select a blank area of the drawing page to make the change.
How do I change the scale in Visio?
Right-click the page tab, click Page Setup, and then click the Drawing Scale tab. Select Pre-defined scale, and then click a pre-defined architectural, metric, or engineering scale; or select Custom Scale and type your own scale values.