"The Elk Content Links plugin was originally intended as an easy way for companies to create links to their Revit® standards from within Revit®. More broadly, you can create links to any website, intranet, file or folder on the network, or create an email. The buttons are customized via an XML settings file where buttons can be added, removed, or changed."
|Example XML settings file|
There's more information available on the Autodesk Exchange Apps website.