The Natural Language Naming Convention
Naturally, the file names should describe the content of the file as accurately and concisely as possible. Use long names but always use the three letter extension, htm.
All characters in all HTML filenames will be lower case. It is necessary to be consistent with this because UNIX is case-sensitive.
Use the .htm extension and not the longer, more traditional .html extension. This will prevent Windows-based tools like Micrososft Word for Windows 95 from automatically appending a .doc extension to your .html filename.