<p><i>Note: most #wxyz references are issue numbers you can find in <ahref="http://support.chamilo.org/projects/chamilo-18/issues"target="_blank">our public bug tracking system</a>. Some references marked BT#xyz are developments made externally for BeezNest customers and integrated into Chamilo. The details of these tasks cannot be seen for confidentiality reasons, but the code change is public and can be reviewed by anyone.</i></p>