/start <開始收message
/stop <停止收message
/add [SubjectCode] [ComponentCode] <添加收到提示Subject+Component
/delete [SubjectCode] [ComponentCode] <刪除收到提示Subject+Component
/list
/showSubjects <顯示支援ge course
/commands
link: https://t.me/PolyAddDropBot
當科目同component有位個陣, 隻bot 會send message 提你有位
*打 /start 個bot 先開始出notification
*記住 SubjectCode 同 ComponentCode 係全大楷
*有位個陣隻bot就出通知
用 /commands 可以睇到隻bot support到咩function/其他 commands