structural:scholar_edition, linguistic:voice_change, information:filtering, structural:summarization
Spelling

The different versions of the series spell the title differently — thus Hitch-Hiker's Guide, Hitch Hiker's Guide, and Hitchhiker's Guide are used in different editions (UK or US), formats (audio or print), and compilations of the book, with some omitting the apostrophe. Some editions use different spellings on the spine and title page. The h2g2 's English Usage in Approved Entries claims that Hitchhiker's Guide is the spelling that Adams preferred. At least two reference works make note of the inconsistency in the titles. Both, however, repeat the statement that Adams decided in 2000 that "everyone should spell it the same way from then on."