在某些排版系统中，以一个文件的形式包含两个图形比分别包含两个图形要更容易。
On some typesetting systems, it is easier to include two related figures as one file than to include them separately.
我的配置文件并不是一个排版良好的样例。
My configuration file is by no means a good example of an organized file.
必备的基础知识，如shell、文件和目录、文本处理、进程管理、编辑排版和电子邮件。
Basic essential information such as the shell, files and directories, text processing, process management, editing and typesetting, and electronic mail.
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