seen on the Geonovum website
Geonovum invites you to contribute to the next version of the large scale basemapping informationmodel IMGeo.
IMGeo includes the obligatory BGT specs and in addition a set of optional specs. The new version of IMGeo, version 2.0, is all about these optional specs and will include “plus-topography” and “maintenance-topographyā€¯.