What are the differences between these types of NT groups?

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Here is an exerpt from some code that goes through a set of users and
writes their AD group membership to a database table.

Note that either "1:" or "2:" is pre appended to the name that gets
added to the objList dictionary object (which is later saved in the
database)

What is the difference between the groups that start with "1:" and
"2:"?

Thanks.


Set objList = CreateObject("Scripting.Dictionary")
objList.CompareMode = vbTextCompare


Public Function GetGroups(objMember)
'On Error Resume Next
objList.RemoveAll
Call EnumGroups(objMember)
Set GetGroups = objList
End Function


Public Sub EnumGroups(objMember)
' Recursive subroutine to retrieve group memberships.
Dim arrGroups, strGroup, objGroup

arrGroups = objMember.memberOf

If IsEmpty(arrGroups) Then
' Do nothing.
ElseIf (TypeName(arrGroups) = "String") Then
Set objGroup = GetObject("LDAP://"; & arrGroups)
If Not objList.Exists(objGroup.sAMAccountName) Then
objList.Add "1:" & objGroup.sAMAccountName , True
Call EnumGroups(objGroup)
End If
Else
For Each strGroup In arrGroups
Set objGroup = GetObject("LDAP://"; & strGroup)
If Not objList.Exists(objGroup.sAMAccountName) Then
objList.Add "2:" & objGroup.sAMAccountName , True
Call EnumGroups(objGroup)
End If
Next
End If
End Sub
.

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