Show Intersections switches on/off displaying of small icons on intersections, i.e. nodes where routable roads intersect one another.

Split Self-Intersecting Roads function divides roads which form closed loop into several parts. Self-intersecting roads are not allowed in routable maps. When Mapwel compiles routable map, it calls this function internally, so it is not necessary to use it unless you want to export routable map into file for processing in other software.

Detect Intersections is function for automatic marking of road intersections. Maps created from OSM and routable MP files should not need to mark intersections, because intersections are imported from these files. Use this function if you draw routable map manually or if you import data from vector files (like ESRI shapefiles) which do not contain node definition. Intersections can be marked also manually node-by-node in the creation/editing mode when user has access to individual nodes of object.

Locate Unused Intersections command identifies nodes that are declared as intersections, but they are used by only one road, i.e. they are not real intersections of two or more roads. Found nodes are highlighted in the work area. This command helps to discover errors in the routable map.

Clear Unused Intersections command deletes "intersection" flag from nodes that are used by only one road, i.e. they are not real intersections of two or more roads.

Merge Close Intersections. Data structure of routable maps uses approximately 0.00002 grid. Nodes that are closer than this grid spacing are regarded as identical. Adjustment of node coordinates to this grid is made automatically during map compilation. However, if you export map to *.MP or another file format for processing in other software, it may be necessary to use this command to avoid too close nodes.

Export Border Nodes. If you need navigation to work between adjoined individual maps, the maps must have common border nodes on common edge. Use this command to save border nodes from currently open map for use in another map. Mapwel software scans all routable roads and exports coordinates of nodes marked with 'border' attribute to an .mbn text file.

Import Reference Border Nodes. This command merges reference border nodes (saved with above command) from .mbn text file to the current map. Reference points appear on the map as user-defined exit icons. Reference points outside of map area are ignored. Use reference points as a template to edit roads that are crossing the map border. Align border nodes of these roads to imported reference points. Use 'snap to nodes' option to ensure highest available accuracy. When all road border nodes are aligned, delete imported reference points from the map, as their meaning is only to help synchronization of actual border nodes between individual maps.

Road Network Diagnostic Tool. This command starts tool for analysis of the road network in the map and identification of errors.