Here is another one, which throws an error 11 every now and then without need.
KEYED "M50002",[1:1:1]+[1:2:8]+[1:10:4]+[1:21:20]+[1:14:7],[1:21:20]+[1:1:1]+[1:2:8]+[1:10:4],[1:41:3]+[1:44:10]+[1:21:20]+[1:1:1]+[1:2:8]+[1:10:4],[1:54:10],0,-512,BSZ=4,OPT="0",SEP=$8A$
It is a VLR file.