当在工作区中移动鼠标指针时，这些线会跟随着它，使您随时可以知道当前位置的精确坐标。
These follow your mouse pointer as you move it around the workplace, letting you know the exact coordinate of your current position at all times.
从当前位置开始，将指令指针向前移动指定的元素个数。
Moves the instruction pointer forward by the specified number of elements, starting at the current position.
整个函数将文件指针从当前位置向前或向后移动移动到一个新的位置。
This function moves the file pointer from its current position to a new position, forward or backward, specified by the number of bytes.
整个函数将文件指针从当前位置向前或向后移动移动到一个新的位置。
This function moves the file pointer from its current position to a new position, forward or backward, specified by the number of bytes.
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