Collectively, the example of the axial H-9a in α-santonin explains two important aspects: (a) that a near-first-order resonance is still not fully first-order, but rather exhibits noticeable and precisely measurable deviations in the frequency locations of the peaks, lines, and entire resonance; (b) that the terms like peak, pattern, line, and resonance have to be clearly defined and differentiated in order to describe NMR spectra properly.