undocumented errors

Could the originator of these error codes please document them
briefly, as the rest of the Subversion error codes are?

typedef enum svn_errno_t {
  SVN_WARNING = (APR_OS_START_USEERR + 1),
  SVN_ERR_NOT_AUTHORIZED,
  SVN_ERR_PLUGIN_LOAD_FAILURE,
  SVN_ERR_UNKNOWN_FS_ACTION,
  SVN_ERR_UNEXPECTED_EOF,
  SVN_ERR_MALFORMED_FILE,
  SVN_ERR_INCOMPLETE_DATA,
Received on Sat Oct 21 14:36:23 2006