I want to learn how converting any Allplan element to IFC model in order to compatible with IFC 2x3 standards possible is (http://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/). Simply, I need an example that explain how can any solid created by using extrude or tessellated object functions can be converted as a wall into IFC model.How can P-sets,attiributes base quantites be assigned to model. I need this example so much. That makes me so grateful.