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.
what is a .dcm file? Digital images classified as raster image files and saved in the DCM format are also called DICOM image files. These DCM files are appended with the .dcm extension, and DICOM in the DICOM image format stands for Digital Imaging and Communications in Medicine. The DCM image format was developed by the National Electrical Manufacturers Association (NEMA), which also developed the DICOM image format.