Every GUI window comes with its built-in help. This help is usually the most up-to-date source of information for the respective GUI window.

Although intuitive layout of the GUI windows is integral part of the toolbox (and GUI) design, the tasks to be performed are often rather complex. Especially to provide the user with the possibility to control the task in every necessary detail, often lots of controls are necessary. Therefore, an up-to-date, concise built-in help is very helpful.

The help should go into an additional GUI window, consist of a series of (HTML) files and cover both an introduction to the GUI and its operation and a description of each of the controls.