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  2. Public-domain software - Wikipedia

    en.wikipedia.org/wiki/Public-domain_software

    In the 1980s, a common way to share public-domain software [verification needed] was by receiving them through a local user group or a company like PC-SIG of Sunnyvale, California, which maintained a mail-order catalog of more than 300 disks with an average price of US$6. [9] Public-domain software with source code was also shared on BBS networks.

  3. Disc herniation - Wikipedia

    en.wikipedia.org/wiki/Disc_herniation

    Disc herniation can occur in any disc in the spine, but the two most common forms are lumbar disc herniation and cervical disc herniation. The former is the most common, causing low back pain (lumbago) and often leg pain as well, in which case it is commonly referred to as sciatica .

  4. Kyphosis - Wikipedia

    en.wikipedia.org/wiki/Kyphosis

    Whereas in postural kyphosis, the vertebrae and discs appear normal, in Scheuermann's kyphosis, they are irregular, often herniated, and wedge-shaped over at least three adjacent levels. Fatigue is a very common symptom, most likely because of the intense muscle work that has to be put into standing or sitting properly. The condition appears to ...

  5. Digital rights management - Wikipedia

    en.wikipedia.org/wiki/Digital_rights_management

    The company later credited owners of the affected games with a free download, and there has been no further downtime. [72] In 2011, comedian Louis C.K. released his concert film Live at the Beacon Theater as an inexpensive (US$5), DRM-free download. The only attempt to deter unlicensed copies was a letter emphasizing the lack of corporate ...

  6. Content Protection for Recordable Media - Wikipedia

    en.wikipedia.org/wiki/Content_Protection_for...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  7. Compact Disc and DVD copy protection - Wikipedia

    en.wikipedia.org/wiki/Compact_Disc_and_DVD_copy...

    CD/DVD copy protection is a blanket term for various methods of copy protection for CDs and DVDs.Such methods include DRM, CD-checks, Dummy Files, illegal tables of contents, over-sizing or over-burning the CD, physical errors and bad sectors.

  8. Lordosis - Wikipedia

    en.wikipedia.org/wiki/Lordosis

    The Boston brace is a plastic exterior that can be made with a small amount of lordosis to minimize stresses on discs that have experienced herniated discs. In the case where Ehlers Danlos syndrome (EDS) is responsible, being properly fitted with a customized brace may be a solution to avoid strain and limit the frequency of instability.

  9. Musculoskeletal causes of back pain - Wikipedia

    en.wikipedia.org/wiki/Musculoskeletal_causes_of...

    Maintain proper posture: In many cases poor posture (also called bad posture) is the root cause of back pain because of more stress on the disks and less back muscles activity. [ 1 ] [ 10 ] Most common bad posture samples are round back, sway back, forward head, excessive anterior and exterior pelvis tilts. [ 10 ]