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Robin Clark 2010-07-22 10:12:59 +01:00
parent 56521c4b7b
commit 29f862801a

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@ -469,6 +469,8 @@ A countour is said to be enclosed if it fits completely within another contour.
Pairs of contours may belong to the same pure intersection chain.
Pure Intersection chains are a chain of contours that can all
be linked together by pure intersection relationships ( see figure \ref{fig:pic} ).
That is to say that all contours within a pure intersection chain are `reachable'
via pure~intersection relationships.
Contours in the pure intersection chain may enclose other members
in the same chain, but not the contour that they are purely intersected with (see figure \ref{fig:picwaie}).
\par