When counting down the counter variable, $[officename] Basic checks for overflow or underflow. The loop ends when Counter exceeds End (positive Step value) or is less than End (negative Step value).
当计数器变量的值下降时，$[officename] Basic 会检查溢出或下溢。当计数器大于 End（Step 为正值）或小于 End（Step 为负值）时，循环结束。