Entities.csv This file lists the archaeological features that have been assigned to each entity. Included in this listing are the fields that describe what the entity represents (ie an Iron Age mortuary enclosure or a middle Bronze Age settlement). Please be aware that fields describing each entity repeat their values for each feature that belongs to the entity. Should it be a requirement to produce a list with each entity and its description occurring only once, construct a SQL Select statement using the Distinct keyword and exclude the fields SiteCode, FeatureGIS and Feature. This file can be used with the Entities shape file, and other shapefiles in the publication archive which have the field EntityID, to identify the individual features that make up each entity. Additional explanatory information about the Framework Archaeology recording methods can be found in Landscape Evolution in the Middle Thames Valley, Heathrow Terminal 5 Excavations Volume 1, Perry Oaks, Framework Archaeology, 2006, pp 15-22.