rem: void               setCommand(const QDateTime& dt, const QString& command, int flags) { set(dt, command, QColor(), COMMAND, flags); }
add: void               setCommand(const QDate& d, const QString& command, int flags) { set(d, command, QColor(), COMMAND, flags | ANY_TIME); }
context: 		void               setCommand(const QDateTime& dt, const QString& command, int flags)		                            { set(dt, command, QColor(), COMMAND, flags); }