[/============================================================================
  Boost.Geometry (aka GGL, Generic Geometry Library)

  Copyright (c) 2009-2011 Barend Gehrels, Amsterdam, the Netherlands.

  Use, modification and distribution is subject to the Boost Software License,
  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  http://www.boost.org/LICENSE_1_0.txt)
=============================================================================/]

[heading Metafunction result type]
The metafunction tag defines [*type] as one of the following tags:

* point_tag
* linestring_tag
* polygon_tag
* multi_point_tag
* multi_linestring_tag
* multi_polygon_tag
* box_tag
* segment_tag
* ring_tag

[heading Complexity]
Compile time

[heading Example]
[tag]
[tag_output]
