code: function getLastNumber(str){
  					var retval="";
  					for (var i=str.length-1;i>=0;--i)
  						if (str[i]>="0"&&str[i]<="9")
  							retval=str[i]+retval;
  					if (retval.length==0) return "0";
  					return retval;
  				}
docs: the exporter is buggy eg VCGLab | MeshLab and does not specify input_set