"Single HTML file" sets up an expectation to me that it is (1) browser based and (2) client-side only. In other words, you can just open the file and start goin

"Single HTML file" sets up an expectation to me that it is (1) browser based and (2) client-side only. In other words, you can just open the file and start going without setting up a server, setting up a database, installing anything, or even having internet access. The last is not technically required but I think it is implied. It does not imply anything about the length of the file or the presence of client-side scripting.