Flush out OID discussion

doc/guide/admin/slapdconfig.sdf

@@ -797,15 +797,16 @@ clause is a shorthand for the clause "{{EX:dn=.* attr=member}}"
 
 H2: Schema Specification
 
-The {{EX:objectclass}} and {{attributeTypes}} configuration file
+The {{EX:objectclass}} and {{EX:attributeTypes}} configuration file
 directives can be used to define schema rules on entries in the
 directory.
 
 H3: Object Identifiers
 
-Each schema element is identified by a globally unique Object
-Identifier (OID).  OIDs are also used to identify other objects.
-They are commonly found in protocols described by ASN.1.  In
+Each schema element is identified by a globally unique
+{{TERM[expand]OID}} ({{TERM:OID}}).  OIDs are also used to identify
+other objects.
+They are commonly found in protocols described by {{TERM:ASN.1}}.  In
 particular, they are heavy used by Simple Network Management
 Protocol (SNMP).  As OIDs are hierarchical, your organization
 can obtain one OID and branch in as needed.  For example,
@@ -825,7 +826,14 @@ OID		Assignment
 !endblock
 
 You are, of course, free to design a hierarchy suitable to your
-organizational needs under your organization's OID.
+organizational needs under your organization's OID.  No matter
+what hierarchy you choose, you should maintain a registry of
+assignments you make.  This can be a simple flat file or a
+something more sophisticated such as the OpenLDAP OID Registry
+{{URL:http://www.openldap.org/faq/index.cgi?file=197}}.
+
+For more information about Object Identifers (and a listing
+service) see {{URL:http://www.alvestrand.no/harald/objectid/}}.
 
 .{{Under no circumstances should you use a fictious OID!}} 
 
@@ -835,6 +843,13 @@ a OID under {{ORG[expand]IANA}} maintained
 may request an OID to be assigned under this arch.  Just fill
 out the form at {{URL: http://www.iana.org/cgi-bin/enterprise.pl}}
 and your official OID will be sent to you usually within a few days.
+Your base OID will be something like {EX:1.3.6.1.4.1.X}} were {{EX:X}}
+is an integer.
+
+Note: Don't let the "MIB/SNMP" statement confuse you.  OIDs
+obtained using this form may be used for any purpose including
+identifying LDAP schema elements.
+
 
 H3: AttributeType Specification