If the true name of a file ends in a numeral, that numeral may be spelled out in the archived file name if it is likely to create confusion with the version number. A version number, if present, comes directly after the filename. All decimal points following the first are omitted. The standard three-letter abbreviations for the compression format or formats relevant to the file are appended to the end of the archived file name, with a period preceding each of at most two formats. If the archived file name exceeds 31 characters when created according to the above rules, the true file name should be abbreviated in a manner judged to be appropriate to the archivist so that the archive file name does not exceed 31 characters.
Filenames never contain upper case characters.
The archivists will make every effort to ensure that no submission will cause a downloader serious problems. All executable files will be executed to verify that, at the very least, the application does not immediately crash. All HyperCard stacks will be executed using the latest version of HyperCard, which is 2.1 at this writing. All documents will be viewed in some sort of word processor. For other types of files, all attempts will be made to ensure some basic sort of functionality, but the archivists do not have access to every software and hardware combination that a submission may require for proper functioning.