Several people wrote to correct my inexact terminology in talking about URLs pointing at files available on the nets via FTP (and, at times in the future, Gopher or the World-Wide Web). URLs are not part of the HyperText Markup Language (HTML) as such, although they are somewhat related, given their joint usage on the World-Wide Web.
New Documents in Snow Leopard's TextEdit
In the Snow Leopard version of TextEdit, you can now create a new document by Control-clicking TextEdit's Dock icon (when it's running), and choosing New Document from the pop-up menu. This isn't a major feature, of course, since you can also just press Command-N while in TextEdit, but consider Control-clicking other applications' Dock icons to see what functions they might make available.