[Zope] How can I examine an property of an object from the other object in the other tree?

[이관수(LEE Kwan Soo)]

Thank you for your reply with apology for non-plain text mail & varous typos.

After a shower and your reply, I can refine my question.

As you wrote, <!--#var "english.members.test.docTest.TR"--> works OK.
   (docTest is DTML Document and TR is its property)
But only as far as I *hard code* into every DTML Document such a line(yes there is a way to hard code such a line into every DTML Document if I have to but it seems too foolish and complicated).

Is there a way to write *ONE* DTML code and use it in every DTML Document? 

I wrote in the root folder an one liner DTML method 'isTRed' which is
<!--#var "'english.'+ _.string.join( _.string.split(URL0, '/')[4:], '.')+'.TR'" -->

It gives the string english.members.test.docTest.TR 
when called in the DTML Document /korean/members/test/docTest as <!--#var isTRed-->.

But <!--#var "isTRed" --> gives the source of isTRed method.
And <!--#var "_[isTRed]"--> gives attribute error.
<!--#var "_['isTRed']"--> gives the string english.members.test.docTest.TR as might be
expected. 

Please don't laugh at my silliness,  : (.

Any revelation?

TIA

LEE Kwan Soo.