The multi-view display functionality developed for the ENCODE project (Rosenbloom, et al., this issue) is now used in several other tracks, including the new 44-species conservation track on the hg18 human browser and the chain and net tracks on the hg19 human browser. This functionality makes it possible to manipulate the display of related subtracks within a large track at several levels: by data type, by specific track attributes, or at the individual track level. Additionally, the track display order on the main browser page can be controlled for multi-view tracks. For example, the subtracks within the Primate Chain/Net track on hg19 can be configured to group together all tracks for a given primate, all of the chain tracks, or all tracks for a particular clade (Hominidae, Cercopithecinae or Haplorrhini). This configurability gives users greater flexibility to create customized displays.
