Updated interning strings (markdown)

interning-strings.md

@@ -24,7 +24,7 @@ will return the value that **froboz** is bound to in the root namespace;
 
     (eval foobar.froboz)
 
-will return the value that **froboz** is bound to in a namespace which is the value of the name **foobar** in the current name namespace; and that
+will return the value that **froboz** is bound to in a namespace which is the value of the name **foobar** in the current namespace; and that
 
     (eval .system.users.simon.environment.froboz)
 
@@ -32,6 +32,8 @@ will return the value that **froboz** is bound to in the environment of the user
 
 The exact path separator syntax may change, but the principal that when interning a symbol it is broken down into a path of tokens, and that the value of each token is sought in a namespace bound to the previous token, is likely to remain.
 
+Obviously if **froboz** is interned in one namespace it is not necessarily interned in another, and vice versa. There's a potentially nasty problem here that two lexically identical strings might be bound in different namespaces, so that there is not one canonical interned **froboz**; if this turns out to cause problems in practice there will need to be a separate canonical [[hashtable]] of individual path elements.
+
 Obviously this means there may be arbitrarily many paths which reference the same data item. This is intended.
 
 ## Related functions