Flow refers to the ability of users to accomplish tasks with an application in a seamless manner. It encompasses four key features: contextuality, location, connectivity, and directness. Contextuality involves understanding where the action needs to occur and what interaction mode is dominant. Location deals with the placement of elements on a screen to make them easily accessible. Connectivity refers to how well integrated the application is with the wider world, allowing for seamless interactions between different apps or services. Directness measures the number of distinct steps required to complete a task, aiming to minimize unnecessary user effort. A well-designed flow leads to speed, but this is an output rather than an input that can be controlled by designers and developers. By incorporating these features, applications can create a more seamless and efficient experience for users.