2.4
macs:Mac OS X10.3.9
FchF
C1145889974103D1145889979498
newFormat
{p=proof{p{s(i{r&1;})r{u=uProof;s=proof;}o{c=0;s="";l="";d@}u{t()}f(t{s(i{r=fol{t="";b()g=@;}})r{u=uPremise;s=step;}o&6;u{t()}})}g{g(s{g{r=fol{t="/x (LeftOf(x, a) | BackOf(x, a))  %  (/x LeftOf(x, a) | /x BackOf(x, a))";b()g=@;}}r{u=uFOLGoalRule;s=fol;}s()o{c=0;s="";l="";d@}})}a=false;}}c=28665;
s=49429;