intersection & union definitions in OWL and MKR

I'm going to make these even more abbreviated
because I'm getting tired of writing OWL.

Note: line boundaries are invisible in MKR.
Each definition could have been written on a single line.

# OWL definition                            # MKR definition
<Class ... "subject">                        subject
<intersectionOf>                                   isand
<Class ... "c1"/>                                        c1,
...                                                               ...,
</intersectionOf>                                        ;
</Class>

<Class ... "subject">                            subject
<unionOf>                                            isor
<Class ... "c1"/>                                      c1,
...                                                              ...,
</unionOf>                                                ;
</Class>

<Class ... "subject">                                subject
<disjointUnionOf>                                    isxor
<Class ... "c1"/>                                        c1,
...                                                                ...,
</disjointUnionOf>                                        ;
</Class>

Dick McCullough
knowledge := man do identify od existent done;
knowledge haspart proposition list;
http://rhm.cdepot.net/