DLL cross reference?

[rsunde]

Is there an article or other means by which I can tell what a particular WB DLL relates to?
For instance, what are: wbdch34i.dll, wbddb34i.dll, wbddd34i.dll, etc.
It would be great to have a way to find that for all WB DLLs

[Deana]

The 3rd and 4th characters of the WIL DLL name are a clue to the version.

Currently:
The 3rd character is an indicates the version number (converted to its alphabetic equivalent). for example: a=1, b=2, c=3 etc. So a = 2001, b= 2002, c= 2003 etc.
The 4th character is the version letter.