Mandatory possession

Hi all,

        I want to add in Chasma"o"cho the feature of mandatory possession, and
I need some information about it.

        I know that in languages having this feature, words needing mandatory
possessives refer generally to the family. Are there other kinds of
words that need this (I'm thinking of parts of body maybe, but are there
others?).

        Also, in the case of mandatory possession, how regular are the words
that use it? That's to say, do those words behave just like any other
word, just having always a possessive marking that is the same that for
the ones that don't need it, or do those words have different roots
depending on the possessor, or is the root and the possessive so blended
that you can't recognize really a common root for all forms of the same
word?

        And finally, how languages that have mandatory possession manage to use
the words having this feature when possession is completely irrelevant
(for instance, when speaking of "a mother" in general)? Do they use a
different word than the one with mandatory possessives? And when the
possessor appears (like in "Peter's mother"), do they use a different
word or just use a construction like: "Peter's his mother"?

        Thank you in advance for your answers.

--
        Christophe Grandsire

        Philips Research Laboratories --  Building WB 145
        Prof. Holstlaan 4
        5656 AA Eindhoven
        The Netherlands

        Phone:  +31-40-27-45006
        E-mail: grandsir@natlab.research.philips.com