Forward subdomain to subdir, transparently?

I know I can forward a subdomain to a subdirectory in my main domain. But is there a way to do this so the url doesn’t change? i.e. a user goes to “” and is forwarded to “”, but their browser still says “”. I believe this can be done with .htaccess, but I’ve tried a few scripts and can’t seem to get it right. Total noob, but willing to learn.

Set it up in the DH panel as fully-hosted instead of redirected, and use the subdirectory as the document root directory for that domain.

– Dan

Thanks. Now it seems obvious. I wasn’t even paying attention to that field in the panel.