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Do other SMRs record the survey date of the underlying OS map layer used to plot individual monument or event polygons? It seems to me important to record this as part of the metadata for a map object. In ten or more years time, the base maps will have changed and an area may have been redeveloped; an SMR database user may be left wondering how the shape of a polygon was derived. Also, some polygons may have been traced from raster layers of historic maps, in which case the name/scale/date needs to be recorded. Ingrid Peckham SMR Assistant Southampton City Council Tel: 023 8083 2850 Fax: 023 8033 7593 Email: [log in to unmask]