The Bentley Audi TT Manual
This manual, by Audi of America, is (apparently) the English translation of the official German Factory Repair Manual for the Audi TT. The latest version as of this writing covers the TT coupe and roadster versions (year 2000 to 2002). The manual is published and sold online by Bentley Publishers. Here is the link to Bentley's page for this manual.
Here are a notes about improving user experience. Note that this is not about breaking intellectual property laws or circumventing restrictions!
Not having the CD in the drive always
I personally thought it was a pain to have the CD in the drive all the time. My laptop did not have a CD-ROM drive at the time I was interested in this area anyway. In any case, the eBahn reader needs a valid customer key to function, so it is only appropriate that I must be able to copy the CD to my hard disk, say. This is possible, actually.
In the simplest possible modification (no ugly hacks, programming or binary editing), you can modify the "resources_esis32.INI" file, which is located in "BentleyPubs\eBahn\conf". For example, you can copy the "disc4" directory from the CD (this is the 2001-2002 version) as C:\disc4, and change the drive letter from that of your CD-ROM drive to "C" (in two places, "Drive1=..." and "app.cd=..."). That's it - the manual would run from the hard disk.
If you have more than one partition, you can copy the CD to the root of another partition as well.
Incidentally, if your CD-ROM drive letter changes (you installed/removed/swapped disks), you can edit the same file to make things work again.
Note that unless you change things further, the CD has to be copied in the top-level directory of a drive (thus, C:\disc4, D:\disc4 ... etc. - of course, it can be a networked drive as well).
I believe this is not a license infringement! If it is, don't do it! I expect the publisher to put this functionality in a future revision.
Running eBahn from Linux
I seldom use Windows, and it would be very useful for me to be able to use eBahn from within Linux. This should be obvious to those familiar, but you can use the existing Windows partition on a multi-boot machine along with VMWare to achieve this.