hi, is it worth my while reverse engineering the jmf format? it feels like i should... for example, if i've got a large number of integers -- can't i just write them out and have j map the file straight into a noun? for(i=0;i<N;i++) fwrite(a+i;sizeof(long),1,f); what's the overhead in parsing such a file (compared to J <-> J jmf)? ta, jack