You can export your company to a web page, so that you can easily share it with other people, or put it on-line for your own use.
You cannot import the web page back into M.Ind. If you want to keep the company you made so you can change it later, you should save it as well as exporting it.
You can choose the version of HTML to use for export in the Preferences. By default, it is set to XHTML 1.0, but HTML 4.01, HTML 3.2 and “basic” HTML (that is, no particular version) are also possible.
Note that M.Ind creates very basic web pages—this is intentional, so that you can easily modify the page to suit your own needs and tastes using your favorite HTML editor.