The latest tutorial is 'Batch Processing in BricsCAD Sheet Metal'. Apparently there is a Lisp API for sheet metal since V15.3. Looking through the 'atoms-family' of V15.3.05 I do not see any functions that would appear to be part of that API. I have a V16 Platinum license, which, I think, means I can use Sheet Metal functionality in V15. What am I missing? Is there any documentation?