Overview#AttributeType Description is part of the LDAP Directory Information Models and composed of an attribute Type (see RFC 4512 Section 2.5.1) and a set of zero or more attribute options (see RFC 4512 Section 2.5.2).
A AttributeType Description is represented by the ABNF:
attributedescription = attributetype options attributetype = oid options = *( SEMI option ) option = 1*keychar
where <attributetype> identifies the attribute Type and each <option> identifies an Attribute Option. Both <attributetype> and <option> productions are case-insensitive. The order in which <option>s appear is irrelevant.
18.104.22.168 cn;lang-de;lang-en owner
All attributes of an entry must have distinct AttributeType Description.