All subjects mentioned in a finding aid do not have to be tagged. One option is to tag those subjects for which access other than basic, undifferentiated keyword retrieval is desired. Use of controlled vocabulary forms is recommended to facilitate access to the subjects within and across finding aid systems. The <subject> element may be used in many text elements such as Paragraph <p>. To indicate a subject with major representation in the materials being described, nest <subject> within the <archdesc><controlaccess> element.
Use the SOURCE attribute to specify the vocabulary from which the term has been taken. The AUTHFILENUMBER attribute can be used to identify a link to an authority file record that has more information about the subject or cross references for alternative forms of a subject term.
The <subject> element is comparable to MARC field 650.
|AUDIENCE||#IMPLIED, external, internal|
|SOURCE||#IMPLIED, aat, aacr2, cdwa, dot, gmgpc, lcnaf, lcsh, lctgm, local, mesh, mim, ncarules, nmc, rad, rbgenr, tgn, ulan, othersource|
<archdesc level="collection" langmaterial="eng"> <did>[...]</did> <controlaccess><head>Selected Search Terms</head> [other possible elements and text... ] <controlaccess><head>Subjects:</head> <subject encodinganalog="650">Alien and Sedition laws, 1798</subject> <subject encodinganalog="650">American Confederate voluntary exiles</subject> <subject encodinganalog="650">Kentucky and Virginia resolutions of 1798</subject> </controlaccess> </controlaccess> [other possible elements and text... ] </archdesc>
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