[VCARDDAV] Question about SOURCE property in RFC 6350

[Erwin Rehme <[e-mail]>]

In RFC 6350 is says:


        6.1.3 <http://tools.ietf.org/html/rfc6350#section-6.1.3>. SOURCE



    Purpose:  To identify the source of directory information contained
       in the content type.

    Value type:  uri

    Cardinality:  *

    Special notes:  The SOURCE property is used to provide the means by
       which applications knowledgable in the given directory service
       protocol can obtain additional or more up-to-date information from
       the directory service.  It contains a URI as defined in [RFC3986  <http://tools.ietf.org/html/rfc3986>]
       *and/or other information referencing the vCard to which the
       information pertains.*   When directory information is available
       from more than one source, the sending entity can pick what it
       considers to be the best source, or multiple SOURCE properties can
       be included.

Does the "and/or other information..." statement mean that the value is 
can be "free form" text and not just a uri?

-- Erwin Rehme