It is similar to incontri mir GNU General Public Licensegiving readers the rights to copy, redistribute, and modify except for "invariant sections" a work and requires all copies and derivatives to be available under the same license. Copies may also be sold commercially, but, if produced in larger quantities greater thanthe original document or source code must be made available to the work's recipient. The GFDL was designed for manualstextbooks, other reference and instructional materials, and documentation which often accompanies GNU software. However, it can be used for any text-based work, regardless of subject matter. The current state of the license is version 1. Material licensed under the current version of the license can be used for any purpose, as long as the use meets certain conditions. The license explicitly separates any kind of "Document" from "Secondary Sections", which may not be integrated with the Document, but exist as front-matter materials or appendices. Secondary sections can contain information regarding the author's or publisher's relationship to the subject matter, but not any subject matter itself. While the Document itself is wholly editable, and is essentially covered by a license equivalent to but mutually incompatible with the GNU General Public Licensesome of the secondary sections have various restrictions designed primarily to deal with proper attribution to previous authors. Specifically, the authors of incontri mir versions have to be acknowledged and certain "invariant sections" specified by the original author and dealing with his incontri mir her relationship to the subject matter may not be changed. If the material is modified, its title has to be changed unless the prior authors give permission to retain the title. The license also has provisions for the handling of front-cover and back-cover texts of books, as well as for "History", "Acknowledgements", "Dedications" and "Endorsements" sections. These features were added in part to make the license more financially attractive to commercial publishers of software documentation, some of whom were consulted during the drafting of the GFDL. The GFDL requires incontri mir ability to "copy and incontri mir the Document in any medium, either commercially or noncommercially" and therefore is incompatible with material that excludes commercial re-use.Account Options
Retrieved 10 September The GFDL requires the ability to "copy and distribute the Document in any medium, either commercially or noncommercially" and therefore is incompatible with material that excludes commercial re-use. However, it can be used for any text-based work, regardless of subject matter. I will talk with our lawyer and see if that sentence needs to be clarified. Material licensed under the current version of the license can be used for any purpose, as long as the use meets certain conditions. It's like for physics getting rid of a force, right? Richard Stallman said about invariant sections on the debian-legal mailing list: Material that restricts commercial re-use is incompatible with the license and cannot be incorporated into the work. The goal of invariant sections, ever since the 80s when we first made the GNU Manifesto an invariant section in the Emacs Manual, was to make sure they could not be removed. Retrieved August 17, The GFDL is meant as a way to enlist commercial publishers in funding free documentation without surrendering any vital liberty. Archived from the original on 28 February This means that you cannot publish them under DRM systems to restrict the possessors of the copies.