Обсуждение: pgsql: Doc: improve 9.6 description of SP-GiST traverse values.

Doc: improve 9.6 description of SP-GiST traverse values.

Sync relevant parts of commit d2ddee63b back to 9.6 branch.

Branch
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REL9_6_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/9100f534030c543f95c11a2f9c5f1571f55999b9

Modified Files
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doc/src/sgml/spgist.sgml | 65 +++++++++++++++++++++++++++---------------------
1 file changed, 37 insertions(+), 28 deletions(-)