Keyboard shortcuts

Press ← or → to navigate between chapters

Press S or / to search in the book

Press ? to show this help

Press Esc to hide this help

Partition

A swimlane band with its name at the top. Lanes appear in the order they are first named.

diagram activity "Swimlanes"
start
lane "Customer" {
  action "Place order"
}
lane "Warehouse" {
  action "Pick items"
}
stop
Swimlanes Customer Warehouse Place order Pick items

A lane inside a lane is not a sub-partition: it simply moves the steps inside it to that lane. In a diagram with lanes, actions, signals and objects must be inside a lane.

Syntax

lane "name" { ... }

Specification

UML 2.5.1, 15.6.4 (p. 408). A node may belong to several partitions, which is how a fork bar spans lanes.

Used in

Deployment with parallel checks.