Sophie: postgresql8.3-docs-8.3.6-2mdv2008.1 x86

postgresql8.3-docs-8.3.6-2mdv2008.1.x86_64.rpm

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>Chapter 52. GIN Indexes</TD
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>  Internally, a <ACRONYM
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>GIN</ACRONYM
> index contains a B-tree index
  constructed over keys, where each key is an element of the indexed value
  (a member of an array, for example) and where each tuple in a leaf page is
  either a pointer to a B-tree over heap pointers (PT, posting tree), or a
  list of heap pointers (PL, posting list) if the list is small enough.
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