The context view (aka site map) displays the links
going out from the current page (children) as well as those pointing
to this page (parents).
Furthermore the "second generation" of both ways is displayed as well.
Understand the listing line by line:
the left cell shows the pages pointing to the immediate parent,
which is displayed in the second cell of the same line;
the rest of the line shows a child in the third cell and it's children
in the forth.
To switch back to the content view of the page click on the
heading on top.
Future versions should use graphviz or something to draw nice graphs of the surrounding nodes.