Which editor? C'mon, you can tell us - we're all geeks here.
It might (doubtfully) be the first one but it definitely isn't the second one.
Also - is this mysterious HTML editor of the Microsoft FrontPage kinda persuasion? If not, chances are that it's just "ftp.mysite.com" without any protocol prefix specified and in some other place there's a input for which particular directory to "publish" to.
If it's an MSFrontPage editor then it's probably just the "www" address and FrontPage handles all the protocol (but it's been years since I've worked with FP so that may not be reliable info).