Right click on any file in your Layout job list to find some additional menu items:

Rename document: To rename the document in the list. It will also rename the nest name (top right of Layout)

Revert document: Revert the document to it's original. This is useful if you have been using Finishing Tools in Layout and you need to undo what you have done.

Document Info: This will open up a new window with information about the file, including fonts and spot colors:

Document Location: This will open up explorer/finder with the location of the file