The DocBook 5 extensions are the same as the DocBook 4 extensions. In addition, the table actions work also for HTML tables.
A drag and drop with a file from the
Project view
or from the DITA Maps
Manager view to a DocBook 5 document that is edited in Author
mode will create a link to the dragged file (the link DocBook element)
at the drop location. A drag and drop with an image file from the default file system
application (Windows Explorer on Windows, Finder on Mac OS X, etc) will insert an image
element (the inlinemediaobject DocBook element with an
imagedata child element) with the location of the dragged file at the drop
location, like the Insert
Graphic toolbar action.