An integration tree (or GUI tree) is a graph that visualises all the

GUI The GUI ( "UI" by itself is still usually pronounced . or ), graphical user interface, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, inste ...

components of a software. Each node of the tree show the GUI components used in this software. The components on the leaves of the tree are

modeless In user interface design, a mode is a distinct setting within a computer program or any physical machine interface, in which the same user input will produce perceived results different from those that it would in other settings. Modal interface ...

GUI elements, those on the nodes are modal GUI elements. GUIs are highly involved entities. The integration tree of ''Microsoft WordPad''
.

References

Graphical user interface elements {{programming-software-stub