How can I determine the full path and filename of the currently opened .ai file?

Question

In Photoshop, right clicking the file name of the opened file in progress shows an option "Reveal in Explorer" so I know exacly where the file was opened from.
In Lightroom, it is displayed in the metadata.
New to illustrator, I have looked at loads of menu options get cannot see how to find this information.
Would be grateful for some help.

Answer 1

+1 for what Larry said if you are on OS X. You can then scroll through and select any of the listed items and when clicked upon it will take you to that folder/location.
Not that it would offer ease of use or a better method, but you could also use a simple script to retrieve this info as another alternative method:
Example Structure:
alert("File Path/Location:\n" + File.decode(app.activeDocument.fullName));
Results the Below Alert:
alert("File Path/Location:\n" + File.decode(app.activeDocument.fullName).split('/').join('\n/ '));
Results the Below Alert:
But again, not that this approach would offer ease of use or a better method, just another alternative method (It works in my quick tests).