It looks like accessing a system font was going to be another tag, but instead Macromedia made use of a flag in the existing DefineFont2 tag.
Recently, Linden Lab changed the way they create names for new avatars for Second Life. This has caused issues with SLiteChat but a simple work around can resolve this problem for you.
We updated the MO Glossary module with advanced support for anchors.
A known issue with SLiteChat is that avatars are "Ruthed" when displayed in Viewer 2.