To list all the features given by the version of Spatial you installed, run this query:
The result will be as follows:
While the obvious point is that there are many procedures, we can see some keywords that require an explanation. While you already know OSM, we have yet to see what are layers, WKT, shapefiles, and bbox? Layers are to be seen like named subsets--subsets of the set of nodes that you have imported whether by adding them one by one (spatial.addPoint), or by list (spatial.addPoints), or by importing a file (spatial.importOSMFile).
When you add points, they are transparently ...