This instalment of the BPMN Poster Series begins to concentrate on Workflow Patterns. The aim of Workflow Patterns is to provide a conceptual basis for process technology. They can be used for examining the suitability of a workflow system for a particular project, by assessing strengths and weaknesses of various approaches to process specification. Generally, the patterns are classified as Control Flow, Resource, Data, Exception Handling and Presentation patterns. Each of those is further divided into subcategories. This poster, complete with easy visuals, introduces the Cancellation and Force Completion Patterns, which belong to the Control Flow.