This is probably a goofy question but that's the kind I usually ask so I won't be insulted if the answer's obvious....

I'm using Designer Pro X9 to redesign a web site. I have the main section (www.mydomain.com) then I have several subdomains (subdomain1.mydomain.com, subdomain2.mydomain.com, etc.) Also, under my domain & under each subdomain there are Page1, Page2, and so on. Part of my question is about those page names, too.

So:

A) How do I link to pages in one subdomain from the main site or from another subdomain? Is this syntax correct?
B) Is the ".htm" necessary in the link? Or do I follow the same naming convention as within the pages under each "index"?

I'm constantly guilty of overthinking myself into counter-intuitiveness-isms ( THERE's a $5 word for y'all!!) & this may be a classic example, but thanks for the assist!!

Jack