| documentGroupID | false | null - create new document group | Document Group ID, supply to edit an existing document group; otherwise, do not include when adding a new document group | 1 |
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| name | false | | Name of the document group | My Liturgical Mss |
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| description | false | | Description of the document group | Mss which are interesting for my Liturgical research |
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| projectID | false | | Project ID for which to retrieve document groups | 1 |
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| projectName | false | | Project Name for which to retrieve document groups | ECM Matthew |
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| format | false | specified at session open | response output format (json|xml|csv|gchart) | json |
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