- Do not use spaces in file and directory (folder) names
- Use short filenames (seven-nine characters) that have meaning
- Use lower case, but camel casing is OK; be consistent.
- Use alphanumeric characters only: letters and numbers
- Avoid special characters, such as * ! # $ % ^ & = + ; ,
- Use underscores or hyphens; be consistent.
- Use either .html or .htm (pick one nd stick to it, do not mix); preferred (newer) .html
- All filenames end in dot-three-letter, some dot-four-letter, extension.