Data center resources are continually making the leap from the real world to the virtual, but the fact remains that virtual environments are just as prone to disruption as physical ones. So it’s no surprise that we’re starting to see disaster recovery solutions tailor-made for the main virtual
http://www.itbusinessedge.com/cm/blogs/cole/disaster-recovery-for-the-virtual-set/?cs=12206
...and editors are all contributed using these mechanisms. Tools may also augment existing editors, views, and perspectives: • Add new actions to an existing view's local menu and tool bar. • Add new actions to the workbench menu and tool bar...
http://www.eclipse.org/whitepapers/eclipse-overview.pdf