pub const LINE_CONVENTION: &str = "fourth-order Butterworth high-pass at 20 Hz and low-pass at \
200 Hz, each forward and backward; the frequency of the analytic signal between consecutive \
samples, arg(z[n+1] conj(z[n])) fs / 2 pi; a centred median of round(1.4 ms fs) samples, made \
odd, shortened at the ends; the refit of a drop uses a high-pass at 10 Hz";Expand description
The convention of the line, as layers.json names it.