Doc: improve 9.6 description of SP-GiST traverse values.
Sync relevant parts of commit d2ddee63b back to 9.6 branch.
Branch
------
REL9_6_STABLE
Details
-------
http://git.postgresql.org/pg/commitdiff/9100f534030c543f95c11a2f9c5f1571f55999b9
Modified Files
--------------
doc/src/sgml/spgist.sgml | 65 +++++++++++++++++++++++++++---------------------
1 file changed, 37 insertions(+), 28 deletions(-)