A frequent weakness in programs with a GIS specialty is their limitation to build data with the ease offered by CAD-oriented tools. Little by little the gap is reduced, although it is questionable whether it was the GIS that has improved its construction capabilities or the CAD that has implemented geospatial variants such as Bentley Map and AutoCAD Map.
gvSIG 1.9 has almost literally copied the most used AutoCAD tools, even in the order that the text line runs in at least 21 commands. The Marked in red Are news of the Stable 1.9 version, They have not included those that this version maintains in the edition bar, that seem to be of selection.
It can be considered a significant contribution of gvSIG to have integrated this series of tools, with the working logic of AutoCAD. In practice I have seen technicians build with this tool, although many of them for massive cadastral surveys prefer to work with a CAD tool, create a polygon and then bring them to gvSIG; Most people tell me that it is because Java is always working slowly.
On the other hand, for cadastral maintenance, once topologies have been uploaded to PostGis, it does not make sense to extract the data and edit them in a CAD tool; and then these tools become useful. Although for large amounts of data, the consumption of Java resources always affects.