Directory of AI:MID;

at     ctl   
atsign mid   
atsign rel   
cmu    mac   
crtsty mid   
decbts mid   
decdfs mid   
dtx    exe   
dtx    mac   
dtx    mem   
edit   mid   
fasdfs mid   
getmid mid   
iddt   mac   
lisp   exe   
lisp   mid   
lisp   rel   
midas  mid   
olddfs mid   
sort   mid   
srccom mid   
straux mid   
system mid   
teco   mid   
tnxdfs mid   
tsrtns mid   
twxbts mid