When you work in most forms, you can use all application functions (available as main menu items, commands, and actions of the navigation panel, toolbar buttons, and hotkeys) and switch to other open windows. But some forms do not allow this. For example, the main window is not available while a form is opened, so you have to close the form to proceed. You can close a form by pressing Esc.
In addition to regular forms, an application can support operations with spreadsheets and text documents.
The next chapter: Chapter 6. Lists