From GeoGebra Manual
There are two types of objects in GeoGebra: free and dependent. Some of them can be defined to be auxiliary.
- Free objects
- are objects whose position or value doesn't depend on any other objects. They are created by direct input or e.g. New Point Tool. They can be moved, unless they are fixed.
- Dependent objects
- are objects that depend on some other objects. They are created using tools and commands.
- Auxiliary objects
- are either objects which are defined to be auxiliary by user, or objects which were created by specific tools, e.g. Regular Polygon Tool. Spreadsheet cells are also considered to be auxiliary. They have their separate place in Algebra View.