Professor Wobbrock says it uses a large circular cursor instead of the traditional arrow pointer.

VOA: special.2011.04.18

Scratch This Boolean expression allows you to say to scratch if you are touching the mouse pointer, the little arrow, do something. How do we do something?

布尔表达式允许你告诉,当你触碰到鼠标指针，也就是小箭头，程序就相应地做一些事情？

哈佛公开课 - 计算机科学课程节选

Number two, pointer dereferencing starts at the pointer and follows its arrow over to access its pointee.

第二，指针非关联化从指针开始,通过它的箭头,来使用它的指针数据。

哈佛公开课 - 计算机科学课程节选

Let's just assume that s1 is a pointer and as an arrow suggests it's pointing at this byte here.

我们假设s1是一个指针,就像箭头所表示的，指向这个字节。

哈佛公开课 - 计算机科学课程节选