Partially Residual Balanced Multi-Session Designs // Provides functions for generating novel partially residual balanced multi-session designs. These designs arrange products over sessions and periods under partial balance restrictions and compute canonical efficiency factors for direct and residual (carryover) effects. For general background on PRBMS and related crossover design literature, see Aggarwal and Jha (2006) doi:10.1080/03610920600695824 and Fardos et al. (2023) doi:10.18576/jsap/120227.