[Zope] Nested properties???

Hello, I urgently need to nest properties without creating methods. My task is to create a number of public properties, which other users shall use as values in their properties. For example I'd like to create a public property enterpriseName with the value "myEnterprise", and the users shall take this property when they create the new property division with the value "myDivision in myEnterprise", something like "myDivision in &dtml-enterpriseName;". Could you please help me? By the way: Is it possible to insert special characters in properties, like ä? Thanks in advance for your help. With kind regards Lars Heber