This plugin uses [graphviz](http://www.graphviz.org/) to generate a graph showing the links between a
set of pages in the wiki. Example usage:
- \[[linkmap pages="* and !blog/* and !*/Discussion"]]
+ \[[!linkmap pages="* and !blog/* and !*/Discussion"]]
Only links between mapped pages will be shown; links pointing to or from
unmapped pages will be omitted. If the pages to include are not specified,