You can own the surface rights, but you sell the timber rights to farmer John for 25 years. The nature of the status of the land is fixed by law, and are distinguished as being either a freehold estate or a non-freehold estate. Freehold means ownership without limitations to duration.
Enterprise digital rights management (E-DRM or ERM) is the application of DRM technology to the control of access to corporate documents such as Microsoft Word, PDF, and AutoCAD files, emails, and intranet web pages rather than to the control of consumer media.
sldasm file icon: The sldasm file extension is associated with SolidWorks, a 3D mechanical program for Microsoft Windows operating system developed by SolidWorks Corporation. An sldasm is the assembly file which places sldprt part geometry files in their final locations within a 3D scene. A single sldprt part file can be instanced multiple times into a scene, without geometry duplication, by way of the sldasm assembly file.