Enlarged view of the A-side beam of W3 DA. The central part of the beam is truncated to show the sub-dominant structures in the beam. Apart from the central peak the beam consists of many features extending up to ~ 4 degree in an annular ring. The beam also takes unphysical negative values in the annular region, which perhaps arise from noisy measurements. We have separated the negative (orange) and positive (blue) sensitivity parts for visual clarity. A small portion of the beam (with both positives and negatives) is enlarged to show the presence of subtle detailed structures. Motivation for considering all these details in the shape of the beam are described in the text.