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	Fix two typos.
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				| @ -149,7 +149,7 @@ Development History | ||||
|           introduced  an  interesting  data structure suitable for sets - | ||||
|           RD-tree  (Russian  Doll  tree). Further research lead us to the | ||||
|           idea to use GiST for implementing RD-tree, but at that time the | ||||
|           GiST  code  was intouched for a long time and contained several | ||||
|           GiST  code  was untouched for a long time and contained several | ||||
|           bugs.  After  work  on  improving  GiST  for  version  7.0.3 of | ||||
|           PostgreSQL  was done, we were able to implement RD-Tree and use | ||||
|           it  for index access to arrays of integers. This implementation | ||||
| @ -159,7 +159,7 @@ Development History | ||||
|           by  a  single bit-signature, a so-called superimposed signature | ||||
|           (see "Index Structures for Databases Containing Data Items with | ||||
|           Set-valued  Attributes",  1997,  Sven  Helmer  for details). We | ||||
|           developeded  the  contrib/intarray  module and used it for full | ||||
|           developed  the  contrib/intarray  module and used it for full | ||||
|           text indexing. | ||||
| 
 | ||||
|    tsearch v1 | ||||
|  | ||||
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