Changes in version 1.2.2 (2026-04-22) Minor improvements and bug fixes - Fixing the optparse_flag() function for appropriate use, following the highlight made by the v1.8.2 of the 'optparse' package (dependency) Changes in version 1.2.1 (2025-10-30) Major changes - Addition of functions to filter and to check data sets in the W4M 3-table format Minor improvements and bug fixes - Adjustments in information messages - Fixing issues in the documentation following CRAN feedback