PS
# sixpole.m4
define(`biquad',`[
In: Here
resistor(right_)
E: dot
resistor
dot
{capacitor(down_,C); ground(,T)}
line right_ elen_/3
{ dot
line up_ elen_
amp(to (E,Here),elen_/2)
capacitor(from E to Here,C) }
amp(right_,elen_/2)
Out: Here
]')
cct_init
define(`elen_',linewid)
biquad
biquad with .In at last [].Out+(-linewid/4,0)
biquad with .In at last [].Out+(-linewid/4,0)
PE