git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@209958
65c4cc65-6c06-0410-ace0-
fbb531ad65f3
use the \internal modifier to ensure that the resulting documentation
explicitly says 'for internal use only'.
+When adding new API you should also attach a \since note because this will
+indicate to developers that this API did not exist before this version. It
+also has the benefit of making the resulting HTML documentation to group
+the changes for a single version.
+
Structures should be documented as follows.
/*!