UDAs - Restrict to User Defined Types?

[Tobias Pankrath]

On Wednesday, 7 November 2012 at 23:18:41 UTC, Walter Bright 
wrote:
> Why would you look in module X for an attribute that you have 
> no reason to believe applies to symbols from X? How would an 
> attribute for module X's symbols leak out of X on their own?

What if you are using two different libraries in X that require 
you to annotate something with a string?