Z:gnu-www-ja-copyleft--91b052-Copyleft is a way of using of/en

Copyleft is a way of using of the copyright on the program. It doesn't mean abandoning the copyright; in fact, doing so would make copyleft impossible. The &ldquo;left&rdquo; in &ldquo;copyleft&rdquo; is not a reference to the verb &ldquo;to leave&rdquo;&mdash;only to the direction which is the inverse of &ldquo;right&rdquo;.