While Comic Maker was only available for use to UK-based visitors to the website, the Writers' Comics stories were freely available internationally. The comics feature the Tenth Doctor, plus assorted companions and characters from the series (varying depending on the needs of the story). Each comic is 5 or 6 pages long and tells simplified storylines along the lines of what might be found in an old-style Annual or children's storybook. Elements of some of the stories call into question whether they can be considered canonical; like most spin-off productions the BBC has never issued a firm rule on what constitutes canon.