GeneXus objects are composed of parts. Each part is edited through a specific selector, using a specific editor.
When an object is opened or created, the section on the far left (according to the order the selectors are shown) is opened.
For example, when a Transaction is opened, the Structure part is first edited:

The parts can be arranged vertically or horizontally inside the editor by dragging and dropping the tabs.
There are several kinds of editors to be used in different parts. Some of them are:
Note: You can navigate through the different parts using the keyboard shortcuts CTRL+PgUp/PgDn.
