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# Copyright
Copyright (better called copyrestriction) is one of many types of so called [intellectual property](intellectual_property.md) (IP), i.e. a legal concept that allows ownership (restriction) of certain kind of information. Copyright specifically allows to own (i.e. restrict other people's rights to) [art](art.md) creations such as images, songs or texts, which include source code of computer programs. Copyright is not to be confused with [trademark](trademark.md) or [patent](patent.md). Copyright is symbolized by C in a circle or in brackets: (C).
Copyright (better called copyrestriction) is one of many types of so called [intellectual property](intellectual_property.md) (IP), i.e. a legal concept that allows ownership (restriction) of certain kinds of [information](information.md). Copyright specifically allows to own (i.e. restrict other people's rights to) [art](art.md) creations such as images, songs or texts, which include source code of computer programs. Copyright is not to be confused with [trademark](trademark.md) or [patent](patent.md). Copyright is symbolized by C in a circle or in brackets: (C).
When someone creates something that can even remotely be considered artistic expression (even such things as e.g. a mere collection of already existing things), they automatically gain copyright on it, without having to register it anywhere or let it be known anywhere. They then have practically full control over the work and can successfully sue anyone who basically just touches it in any way. Therefore **any code without a [free](free_software.md) license attached is implicitly fully owned by its creator** (so called "all rights reserved") and can't be used by anyone without permission. It is said that copyright can't apply to ideas, only to expressions of ideas, however that's [bullshit](bs.md), the line isn't clear and is arbitrarily drawn by judges; for example regarding stories in books it's been established that the story itself can be copyrighted, not just its expression (you can't rewrite the Harry Potter story in different words and start selling it).