Figure 1. Effect of intaglio printing: authentic banknote (left) and copied note (right).
图1：凹版印刷的效果：真币(左)和复制币(右)。
2
Note: in the preceding code example, the code normally appears as a single continuous line. In this instance, the lines of code are split into multiple lines for ease of formatting and printing.
注意：在上面的例子中，代码通常作为单独的连续行出现，但为了便于设置格式和打印，将它分成了多行。
3
Note that other printing packages may use the magic number mechanism as used by the file command.