To read a CFO digest from the archives, simply select it from the screen to the left.
Note that the dates shown are the date the file was last modified. In some cases, due to system moves, this date is the date when the files were moved to this file system. In others the file was updated, perhaps to fix broken links in the file.
Of course the most useful dates are the more recent ones, so you can tell which files have been added to the archive recently. And you can always tell the date by looking at the first line of the digest itself.
Also remember that you can search the digests using the Virtual Digest.