13.5. The /etc/openldap/schema/ Directory
	  The /etc/openldap/schema/ directory holds LDAP definitions,
	  previously located in the slapd.at.conf and
	  slapd.oc.conf files. All attribute
	  syntax definitions and objectclass
	  definitions are now located in the different schema
	  files. The various schema files are referenced in
	  /etc/openldap/slapd.conf using
	  include lines, as shown in this example:
	
| include		/etc/openldap/schema/core.schema
include		/etc/openldap/schema/cosine.schema
include		/etc/openldap/schema/inetorgperson.schema
include		/etc/openldap/schema/nis.schema
include		/etc/openldap/schema/rfc822-MailMember.schema
include		/etc/openldap/schema/autofs.schema
include		/etc/openldap/schema/kerberosobject.schema | 
|  | Caution | 
|---|
|  | 	    You should not modify any of the schema items defined in the schema
	    files installed by OpenLDAP.
	   | 
	  You can extend the schema used by OpenLDAP
	  to support additional attribute types and object classes using the
	  default schema files as a guide. To do this, create a
	  local.schema file in the
	  /etc/openldap/schema directory. Reference this
	  new schema within slapd.conf by adding the
	  following line below your default include schema
	  lines:
	
| include          /etc/openldap/schema/local.schema | 
	  Next, define new attribute types and object classes within the
	  local.schema file. Many organizations use
	  existing attribute types from the schema files installed by default
	  and add new object classes to the local.schema
	  file.
	
	  Extending schema to match certain specialized requirements is quite
	  involved and beyond the scope of this chapter. Visit http://www.openldap.org/doc/admin/schema.html
	  for information on writing new schema files.