Transclusion in the Muse

Muse's take on transclusion so far is that you can grab what we call an excerpt from a PDF or an image or even a frame from a video and have a source link. In some ways linked cards have some of the same transclusion quality to them but it would be quite a design challenge if they were unified. And I know something I always find myself wanting was search generally Google does a version of this but I'm also thinking of Unix text search tools like Splunk.