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-This is B-Tree implementation using GiST for int4 and 
-timestamp types.
-
-All work was done by Teodor Sigaev (teodor@stack.net) and Oleg Bartunov
-(oleg@sai.msu.su). See http://www.sai.msu.su/~megera/postgres/gist
-for additional information.
-
-NOTICE:
-     This version will works only with postgresql version 7.2 and above
-     because of changes in interface of function calling and in system
-     tables.
-
-INSTALLATION:
-
-  gmake
-  gmake install
-  -- load functions
-  psql <database> < btree_gist.sql
-
-REGRESSION TEST:
-
-   gmake installcheck
-
-EXAMPLE USAGE:
-
-   create table test (a int4);
-   -- create index
-   create index testidx on test using gist (a);
-   -- query
-   select * from test where a < 10;
-