HTML doctype for includes (Visual Studio or HTML generic)

Question

Is there a doctype for includes, which tells validators (at design time, my IDE VS2010) not to check an included HTML fragment (or do a lenient check instea

Answer 1

Do those errors persist after installing Web Standards Update for Microsoft Visual Studio 2010 SP1?

If you find it really annoying, you could always disable it completely under tools -> options -> text editor -> html -> validation