I have probably forgotten something, but...

[crishog]

Take

r←'Resources'#.⎕NS''
Resources.x←1
r.y←1
SYNTAX ERROR
r.y←1
∧
r
#.Resources

Just wondering why I get the syntax error

[kai]

You intuitively assumed that

      r←'Resources'#.⎕NS''

assigns a reference to "r", but it's rather a name.

Instead

      r←⍎'Resources'#.⎕NS''

does the trick.

Or you do it this way:

      Resources←⎕ns''
Resources.x←1
Resources.y←1

[crishog]

Whereas monadic quad NS does return the anonymous namespace. The result is not as consistent as I thought

I meant to type

Resources <- []NS ''

Sorry no APL keyboard at the moment

[kai]

Yes, it's not consistent, but there's a reason why:

1. When ⎕NS was introduced, references weren't yet available in Dyalog.

2. With anonymous namespaces on the other hand there is no name, so it can only return a reference.