re: comments re draft version 2.0 (David Eppstein)

Sorry,  ...  In my reply,  I meant to say "semantics element"  below 

... stuff deleted ...

    A content expression for   a = b <= c   is

            <apply><and/>
                <apply><eq/><ci>a</ci><ci>b</ci></apply>
                <apply><leq/><ci>b</ci><ci>c</ci></apply>
            </apply>

    This could be combined with a better
    presentation using a syntax element.
    -------------------------> semantics < ---------