Did you ever get confused about the different versions and patches displayed in the GUI for clients and Installation Servers? Here is a short overview of the different files used to store this information.
The first two files (in the cell directory) are storing version info, displayed in the "General" tab in the right pane of the GUI when selecting an Installation Server or a Client respectively in the left pane. See versions.JPG for an example.
The other 2 files are storing patch details for the Installation Servers and Clients respectively. This is the popup window when clicking the "Patches..." button after selecting an Installation server or Client in the left pane. See patches.JPG for an example.