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10.2.2 Zonal Sequential Numbers, Numerical Names and Zone Titles
10.2.3 Matrix Dimensions and Units
10.2.4 Stacked Matrices: Levels and Blocks
10.2.5 Zonal Aggregations: Groups, Sectors, Traffic Boroughs etc.
10.2.5.5 Z2G (Zone to Group) etc. Mapping Files
10.2.5.6 Z2G Data within .UFM Files
10.2.6 Z2G etc. Filenames, Extensions and Folders
10.2.8 Open Matrix Format (.OMX)
10.2.8.2 SATURN OMX Implementation