2007/02/02 RD VMMXX
    Assets:Investments:Vanguard:VMMXX  0.350 VMMXX @ $1.00
    Income:Dividends:Vanguard:VMMXX        $-0.35

test reg --invert
07-Feb-02 RD VMMXX              As:Inves:Vanguar:VMMXX -0.350 VMMXX -0.350 VMMXX
                                In:Divid:Vanguar:VMMXX        $0.35        $0.35
                                                                    -0.350 VMMXX
end test