If you're reading a printout of the PDF file, the table of contents is still useful.

如果是在阅读打印出来的PD F文件，那么目录也仍然很有用。

youdao

Essentially, this involves producing an output file instead of a viewable file or a printout.

这主要涉及生成输出文件，而不是可查看文件或打印输出。

youdao

So among your printout from Wednesday, if you have it, you have a file called math1.c. If you don't have this, the programs are short today, so it should be easy enough to follow along visually, but a PDF and the actual source code is available online for these things.

从你们周三打印出来的资料来看，如果你们手上有的话，你们会看到有个叫做的“math1，c“的文件，如果你们没有资料，那些程序还是比较短的，所以你们应该可以很轻松地,来看这些程序，但是那个PDF文件,和实际的源代码都可以到网上找到,相关的资料。

哈佛公开课 - 计算机科学课程节选

Lane Dean watched out of the corner of his eye as a parrot-faced man by the central aisle dividing teams pulled a file out of his tray and removed the return and detached the printout and centered both documents on his blotter.

NEWYORKER: Wiggle Room