Working with GNOME exposes, grouped by theme, the user interfaces to import and work with GObject-Introspectable GNOME libraries.
Please note that within the scope of the G-Golf manual in general, in the sections presented here in particular, we simply (as in merely and in the simplest possible way) exposes the scheme representation and G-Golf interfaces of the elements that are being addressed. For a deep(er) understanding of the original concepts, components and interfaces, you must refer to the upstream library documentation itself.
This is particularly true for the GLib Object System related sections. For a thorough understanding of the GLib Object System - its background, design goals, dynamic type system, base class instantiation, memory management, properties, closures and signals messaging system - please consult the GObject - Type System Concepts of the GObject reference manual.