Eleonora Alei and co-authors presented pyEDITH, a Python-based coronagraphic exposure time calculator for NASA's Habitable Worlds Observatory (HWO), in a paper accepted for publication in the RASTI HWO Special Issue. ^[1] Four bit-exact layouts timed in one process show binary bit planes beating one-hot masks on size and speed at constant bandwidth. ^[2] Leech-lattice vector quantization holds the strongest reported 2-bit quality under its own evaluation protocol. ^[3] The authors found no existing implementation of the multi-shell decoder required by the Leech-lattice rate. ^[4] The paper supplies a multi-shell decoder and measures its serving cost for decode-phase GEMV at batch 1. ^[5] pyEDITH simulates wavelength-dependent exposure times and signal-to-noise ratios (S/N) for synthetic Habitable Worlds Observatory (HWO) direct imaging observations, using realistic engineering specifications and user-defined target information. ^[6] The Habitable Worlds Observatory (HWO) is NASA's next recommended flagship mission tasked with searching for signs of habitability and life in dozens of nearby exoplanet systems. ^[7]