下一个箭头，从包含4的单元格开始，也指向左上侧，但是值没有变。
The next arrow, from the cell containing a 4, also points up and to the left, but the value doesn't change.
您还可以通过单击左上角的箭头图标折叠整个面板。
You can also collapse the entire palette by clicking the arrow icon in the upper-left corner.
校准对应着沿图表的箭头从左上角单元格到右下角单元格的最小成本路径。
Alignments correspond to minimum-cost paths from the top left-hand cell to the bottom right-hand cell that follow the arrows on the diagram.
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