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/WAL/SOA/SOA/HowTo/HowTo/SOA/spgist_dev/spgist_dev generator: Oddmuse