Clearly Label D1/D2/Tango/Phobos

[Paul]

I bought the book and am trying to patiently learn this language. 
  I follow various tutorials here and around the web that 
frequently won't compile.  I suspect it has something to do with 
D1/D2/Phobos/Tango and not just really poor unvetted tutorials.  
It would really be helpful if those providing references, code 
snippets, tutorials, etc clearly identify the context (i.e 
D1/D2/Phobos/Tango).  I just think it would help accelerate the 
spread and acceptance of this language if more of the code worked 
as listed.

If people are out cruising the web and download a fresh copy of D 
with excitement (about a cleaned-up, updated c-type systems 
language) and then the first several things don't compile w/o 
errors, they're going to move on.

Thanks so much to all who provide references, tutorials, etc!  It 
is great service in helping others learn.  I hope this is seen as 
constructive criticism for that is what it is.