The Version field in the Get Info window has enough room for two lines of text, but you should keep the
"long" string brief. It should contain descriptive information consisting of the file's version number, release date, and copyright (but not the file's name as this is already displayed by the Finder):
The auxiliary field (just below the file's name) can contain only one line of text, so you should keep the
"aux" string very brief. This string may contain information that identifies the stack as being part of a set:
Ignatz Software Developer Tools
The version NUMBER (the "short" field) and the Country Code data are useful only if you use FileVersion XFCN to access this information. You may wish to use these fields if you are developing stacks for distribution in different countries or wish to have a convenient way of determining a stack's version number for later updating or modification.