Eml synthesizers

oh by the way
i have made about 70 tracks with my eml so i do have a little experience
the auto set jack on the sequencer is not shown or mentioned in the 
manual
nor is it shown on the accompanying diagrams!
and i checked and i do have it set up as manual says (by coincidence) 
but if i take the patch lead out of trig in jack then the sound *does* 
disappear
i guess auto set is something to do with the "set" switch so that you 
don't have to wait for the sequencer to clock after the last stage 
before starting the rest of a composition playing so that the EML 
starts at the beginning at the same time - but i don't know!
also, my factory mods of A-R ENV (gate in/env out/del gate out) and V-P 
(in/out) - both of which have 2 dials as well as jacks, are not shown 
and i can't find any info on the internet about them