diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 83d2fbb..0b486ab 100644
*** a/doc/src/sgml/ref/alter_table.sgml
--- b/doc/src/sgml/ref/alter_table.sgml
*************** ALTER TABLE table_constraint_using_index
! This form adds a new PRIMARY KEY> or UNIQUE>
constraint to the table using an existing index. All the columns of the
index will be included in the constraint.
! The index should be UNIQUE, and should not be a partial index>
! or an expressional index>.
! This can be helpful in situations where one wishes to recreate or
! REINDEX> the index of a PRIMARY KEY> or a
! UNIQUE> constraint, but dropping and recreating the constraint
! to acheive the effect is not desirable. See the illustrative example below.
If a constraint name is provided then the index will be renamed to that
! name, else the constraint will be named to match the index name.
--- 242,270 ----
ADD table_constraint_using_index
! This form adds a new PRIMARY KEY> or UNIQUE
constraint to the table using an existing index. All the columns of the
index will be included in the constraint.
! The index should be a UNIQUE index. A partial index
! or an expressional index is not allowed.
! Adding a constraint using an existing index can be helpful in situations
! where you wishes to rebuild an index used for a
! PRIMARY KEY or a UNIQUE constraint,
! but dropping and recreating the constraint
! is not desirable. See the illustrative example below.
If a constraint name is provided then the index will be renamed to that
! name of the constraint. Otherwise the constraint will be named to match
! the index name.