/**
@page concepts Concepts

This page explains some of the concepts of OpenNI interface and framework:
- @subpage conc_context
- @subpage prod_graph
- @subpage conc_refcount
- @subpage conc_generation
- @subpage conc_updating_data
- @subpage conc_capabilities
- @subpage conc_coord
- @subpage conc_map_wrapper_classes
- @subpage conc_meta_data
- @subpage conc_locks
- @subpage conc_global_mirror
- @subpage conc_error_state 
- @subpage conc_events
- @subpage conc_licenses
- @subpage conc_recordings
- @subpage conc_mocks
*/
