It's supposed to be used when adding a legend to a screenshot. I think we
should try to avoid using it too much.
If anyone wants to improve it, you're very welcome. Right now it's only used
in queries-images/basic-query.png and apps-images/i-o-m-overview.png.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31769 a95241bf-73f2-0310-859d-f6bbb57e9c96
