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.
THM file is a Panasonic HD Camcorder Thumbnail. Thumbnail image (.thm) generated by digital camcorders and software programs when a video clip is saved, contains a small image from video clip's first frame. Used for visually browsing through a collection of video clips.