+ Used by the ATK adaptor.
+
+ dbind : Library to ease making D-Bus method calls, contains
+ marshalling code to convert function arguments
+ and a provided D-Bus signature into a D-Bus message.
+
+ Used by cspi.
+
+ spi-common : Contains 'C' types derived from the D-Bus
+ protocol specification. These types are used by
+ both the registry daemon and the ATK adaptor.
+ Structures are mainly related to events.
+
+ registryd : This directory contains code specific to the
+ central accessibility registry, and the registry
+ executable is built in this directory.
+
+ atk-adaptor : This directory contains code that bridges
+ the at-spi to the GTK+ toolkit, and which is
+ loaded at runtime by GTK+-based Gnome applications.
+ The 'bridge' automatically registers GTK+-2.0
+ applications with the accessibility registry,
+ and relays UI events from application to registry.
+ It is also responsible for servicing requests from
+ the registry to register handlers for specific event
+ types.
+
+ cspi : The client (AT) side interface - 'C' bindings.
+
+ registryd : The registry daemon code. The registry daemon
+ keeps a register of accessible applications and presents
+ this to clients (ATs).
+ It is also responsible for delivering device events.