- Added a new type of constraint: teacher(s)/students (set) max activity tag changes per day/week (suggested by Vangelis Karafillidis and Abdeljalil LAABAD). - Corrected the Arabic translation, by Benahmed Abdelkrim, as suggested by Volker Dirr, who found some errors using ChatGPT. - Corrected the Uzbek translation, by Ulugbek Tulakov, as suggested by Volker Dirr, who found some errors using ChatGPT.