In the age of AliasSeq, how to refer to template tuple parameters?

[Mike Parker via Digitalmars-d]

On Friday, 2 October 2015 at 12:31:35 UTC, Mike Parker wrote:
> On a whim, I went to [1], which I had previously referenced in 
> the book, and found that all of the content that was previously 
> there has been replaced by a couple of sentences pointing to 
> std.typecons and to [2]. It also says we should no longer refer

[1] http://dlang.org/tuple.html
[2] http://dlang.org/ctarguments.html