Left: zero-order moment maps of ¹³CO (J = 3–2), CS (J = 6–5), and OCS (J = 25–24) integrated over the central channels near V_LSR = 35 km s⁻¹, showing the ~1′′ × 2′′ mini-hg centered at clump S (schematically depicted atop). The OCS emission is largely restricted to the equatorial waist, of both the mini- and large-hourglass. The dashed squares indicate the smaller FoV used in the axial PV diagrams to the right. Right: PV diagrams along PA = 21°. The linear velocity gradient along the mini-waist is indicated with a dashed line.