Add documentation for array_upper/lower().

diff --git a/doc/src/sgml/array.sgml b/doc/src/sgml/array.sgml
index deca39f0ae263b5227f1ebb96bff8a89668255cd..dc2b08161ee402b5565fae34132a597d5413fa74 100644 (file)
--- a/doc/src/sgml/array.sgml
+++ b/doc/src/sgml/array.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Arrays
@@ -195,7 +195,9 @@ SELECT array_dims(schedule) FROM sal_emp WHERE name = 'Carol';
 
   array_dims produces a text result,
   which is convenient for people to read but perhaps not so convenient
-  for programs.
+  for programs.  array_upper and 
+  array_lower return the upper/lower bound of the
+  given array dimension, respectively.