I have always used the term "static html" (as opposed to "dynamically generated html"). "Flattened files" may have been what they were meaning. "Flattened File

I have always used the term "static html" (as opposed to "dynamically generated html"). "Flattened files" may have been what they were meaning. "Flattened Files" would be a nice simple term for them if there wasn't confusion with Flat-file databases.