The Super Dimension Fortress 1) is a networked community of free software authors, teachers, librarians, students, researchers, hobbyists, computer enthusiasts, the aural and visually impaired. SDF was established in 1987. It is operated as a recognized non-profit 501(c)(7) and is supported by its members.
| Title | Video link |
|---|---|
| What Is A 501(c)(7) Nonprofit Organization? | A 501(c)(7) |