mklsgridgettriangletri......get triangle index by triangle ID call: index=mklsgridgettriangletri(fxslayer,id); layer: a complete FXS LAYER structure as returned by MKLSGRIDFXSLAYERTRI. id: ID of a triangle in the LAYER result: index: index number of the triangle specified by ID. layer.tri(index) is the triangle specified by ID. empty if no such trinangle exists. Martin Knapmeyer, 07.12.2004