traced this back to what I believe is an error in the sgml file used to
generate this comment, found in pgsql/doc/src/sgml/ref/alter_table.sgml.
Stephen Birch
ALTER TABLE table
- [ * ] ADD [ COLUMN ]
ER">coBLE>
+ [ * ] ADD [ COLUMN ]
column>
class="PARAMETER">type
ALTER TABLE table
- [ * ] RENAME [ COLUMN ]
ER">coBLE> TO
+ [ * ] RENAME [ COLUMN ]
column> TO
class="PARAMETER">newcolumn
ALTER TABLE table
RENAME TO newtable