Name : Attila Babits E-mail : ababits&graphisoft.hu MIME media type name : Model MIME subtype name : Vendor Tree - vnd.gdl Required parameters : none Optional parameters : none Encoding considerations : The GDL is a binary data which may contain one or more text tags. The GDL (Geometric Description Language) is Graphisoft's parametric object definition language. It is invented for ArchiCAD and used in many other applications. The GDL defines a 3D model, a 2D model, property data, a user interface and a parameter handler. All the above definitions can be parametric. A GDL object is a container for the GDL scripts, default parameters, optional binary data and additonal information (eg. a preview image). Transports not capable of handling binary data must use a suitable encoding Security considerations : The GDL type data does not contain any kind of executable code macro or batch) which runs on client machine. Interoperability considerations : None Published specification : The GDL (Geometric Description Language) is published as a parametric object definition language for ArchiCAD by Graphisoft (http://www.graphisoft.com). Applications which use this media : The 'GDL Object Web Plug-in' for Netscape and MS Internet Explorer - a browser extension that can be found at http://www.graphisoft.com/products/gdl_plugin; ArchiCAD; GDL Object Explorer (standalone application); GDL Object Adapter (standalone application) Additional information : 1. Magic number(s) : 2. File extension(s) : gdl,gsm,win,dor,lmp,rsm,msm,ism 3. Macintosh file type code : TEXT,GSYM,WSYM,DSYM,LAMP,RSYM,MSYM,ISYM Person to contact for further information : 1. Name : Attila Babits 2. E-mail : ababits&graphisoft.hu Intended usage : Common Author/Change controller : Attila Babits