Wikipedia:Update/1/Content policy changes during May 2009

Wikipedia:Biographies of living persons
- Added to WP:BLP#Remove unsourced or poorly sourced contentious material: "(however, whether your edit falls under the exemption may be contentious. See WP:3RR for further guidance. If you expect your edit to be exempt from 3RR, you should clearly state this in the edit summary and justify it on the article talk page)."

Wikipedia:Naming conventions
- Added to WP:NAME#Use standard English for titles even if trademarks encourage otherwise: [Items in full or partial uppercase (such as Invader ZIM) should have standard capitalization (Invader Zim),] "except where non-standard capitalization is selected as one of the many possible methods of disambiguation."
- Added to WP:NAME#Special characters: [Due to technical restrictions the following characters cannot be used in page titles:] "# < >"
- Added to WP:NAME#Special characters: "If dashes are used in page names a redirect using hyphens must be provided (see also Manual of Style (dashes))."
- Removed from WP:NAME#Album and song titles and band names: [In band names and titles of songs or albums, a standard rule of English orthography is to capitalize words] "that are the first or the last word in the title and ..."

Wikipedia:No original research
- In WP:NOR#Reliable sources, changed "prove" to "discover" in several places.
- Added to WP:NOR#Primary, secondary and tertiary sources: "Do not make analytic, synthetic, interpretive, explanatory, or evaluative claims about information found in a primary source."

Wikipedia:Verifiability
- In WP:V#Questionable sources, changed "Articles about such sources should not repeat any contentious claims the source has made about third parties, unless those claims have also been published by reliable sources." to "Questionable sources are generally unsuitable as a basis for citing contentious claims about third parties."
- Shortened WP:V#Wikipedia and sources that mirror or source information from Wikipedia and WP:V#Non-English sources