<Li> As the essential precondition of being able to claim defamation; that is, the alleged libel must have been published, and </Li> <Li> For copyright purposes, where there is a difference in the protection of published and unpublished works . </Li> <P> There are two categories of book publisher: </P> <Ol> <Li> Non-paid publishers: A non-paid publisher is a publication house that does not charge authors at all to publish their books . </Li> <Li> Paid publishers: The author has to meet with the total expense to get the book published, and the author has full right to set up marketing policies . This is also known as vanity publishing . </Li> </Ol>

When was producing publications entirely on computer possible