Build

Node	Inserts a new Node item within existing Link item(s). This breaks up the original Link item into two new Link items. You can also use this command to force a junction between two Link items which cross over each other.
Link	Creates a single Link item using free-form drawing. NOTE: This command does not look for intersections with existing topology, so a single Link item can be created. However the end-points of the new Link item may split other existing Link items. To add a Link into existing topology with intersections, draw a LineString item using LineString [Create > Simple], then use the local Convert to Link command.
TopoPoint	Creates a TopoPoint item that references a Node item.
TopoLineString	Creates a TopoLineString item by tracing over existing Link items.
TopoPolygon	Builds a TopoPolygon out of link/node data using seed positions.