Short articles (such as Start and Stub-class articles) – Include information such as history, future works, and route description; as well as an intersection list, an infobox, and navboxes
Cleanup:
See Cleanup listing for articles needing cleanup. As of 5 September 2013, the largest cleanup categories are: Articles lacking sources (137); Articles needing additional references (76); and Articles with unsourced statements (74)
Copyedit:
All articles, but particularly articles nominated (or those about to be nominated) at WP:GAN, WP:HWY/ACR, WP:FAC