3 files changed, 19 insertions, 6 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index 4a6de0ceb..238a8af8f 100644
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -426,7 +426,7 @@ class array(expression.Tuple):
 
     An instance of :class:`.array` will always have the datatype
     :class:`.ARRAY`.  The "inner" type of the array is inferred from
-    the values present, unless the "type_" keyword argument is passed::
+    the values present, unless the ``type_`` keyword argument is passed::
 
         array(['foo', 'bar'], type_=CHAR)
 
diff --git a/lib/sqlalchemy/dialects/postgresql/constraints.py b/lib/sqlalchemy/dialects/postgresql/constraints.py
index 88d688a05..5b8bbe643 100644
--- a/lib/sqlalchemy/dialects/postgresql/constraints.py
+++ b/lib/sqlalchemy/dialects/postgresql/constraints.py
@@ -6,12 +6,12 @@ from sqlalchemy.schema import ColumnCollectionConstraint
 from sqlalchemy.sql import expression
 
 class ExcludeConstraint(ColumnCollectionConstraint):
-    """A table-level UNIQUE constraint.
+    """A table-level EXCLUDE constraint.
 
-    Defines a single column or composite UNIQUE constraint. For a no-frills,
-    single column constraint, adding ``unique=True`` to the ``Column``
-    definition is a shorthand equivalent for an unnamed, single column
-    UniqueConstraint.
+    Defines an EXCLUDE constraint as described in the `postgres
+    documentation`__.
+
+    __ http://www.postgresql.org/docs/9.0/static/sql-createtable.html#SQL-CREATETABLE-EXCLUDE
     """
 
     __visit_name__ = 'exclude_constraint'
diff --git a/lib/sqlalchemy/dialects/postgresql/ranges.py b/lib/sqlalchemy/dialects/postgresql/ranges.py
index 2054ef137..e7ab1d5b5 100644
--- a/lib/sqlalchemy/dialects/postgresql/ranges.py
+++ b/lib/sqlalchemy/dialects/postgresql/ranges.py
@@ -9,6 +9,19 @@ from ... import types as sqltypes
 __all__ = ('INT4RANGE', 'INT8RANGE', 'NUMRANGE')
 
 class RangeOperators(object):
+    """
+    This mixin provides functionality for the Range Operators
+    listed in Table 9-44 of the `postgres documentation`__ for Range
+    Functions and Operators. It is used by all the range types
+    provided in the ``postgres`` dialect and can likely be used for
+    any range types you create yourself.
+
+    __ http://www.postgresql.org/docs/devel/static/functions-range.html
+
+    No extra support is provided for the Range Functions listed in
+    Table 9-45 of the postgres documentation. For these, the normal
+    :func:`~sqlalchemy.sql.expression.func` object should be used.
+    """
 
     class comparator_factory(sqltypes.Concatenable.Comparator):
         """Define comparison operations for range types."""