Integral shaped filament as seen through our suite of tracers. Panel a: HCO⁺ (1–0) integrated-intensity map of the four OMCs composing the ISF (separated by white lines; Bally 2008). The contours correspond to [10, 30, 50, 70, 90] K km s⁻¹. The red circle represents the position of the Orion BN/KL object. Panel b: C¹⁸O (2–1) integrated-intensity map of the OMCs composing the ISF. We include the O-type (yellow stars) and B-type (white stars) stars in the region, gathered from the SIMBAD Astronomical Database (Wenger et al. 2000), and the outflows detected by Tanabe et al. (2019) (red diamonds; see text for full discussion). The contours correspond to [10, 15, 20] K km s⁻¹. Panel c: DCO⁺ (3–2) integrated-intensity map of the OMCs composing the ISF. The contours correspond to [0.5, 2, 4, 6] K km s⁻¹, where the lowest contour corresponds to a signal-to-noise ratio of 3. The red box is the region selected for the analysis, comprising part of OMC-2 and the whole OMC-3 (see text for a discussion).