title: Zen description: Various topics by Oleg Bartunov. link: http://www.sai.msu.su/~megera/wiki/relation_featur%E5s/DB/GiST/GiST_internals/spgist_dev/CAS/CASCurrentServices/SAI_RVO/Tsearch2/Tsearch_V2_internals/SAI_RVO/SkyPixelization/SphereCube/Gin/SOA/TODO/HowTo/Gin/CAS generator: Oddmuse