\DeclareDatamodelFields[type=field,datatype=literal]{% blogtitle, blogsubtitle, blogtitleaddon, bookbooktitle, bookvolume, bookyear, endbookyear, editoraddon, seriesaddon, handle, shortbooktitle, shortmaintitle} \DeclareDatamodelFields[type=list,datatype=name]{% shortbookauthor, translatora}