Meaning of askstatus="0", recvstatus="-1" and substatus="0"

Hi there,

if i use the import/export service i get a XML-File with all user and there contacts as listed below:

What is the meaning of Meaning of askstatus=“0”, recvstatus="-1" and substatus=“0” and why they are different from contact to contact ?

Thanks in advance!

None?

see http://www.igniterealtime.org/fisheye/browse/svn-org/openfire/trunk/src/java/org /jivesoftware/openfire/roster/RosterItem.java?r=7872

LG