第8行到第11行以soap头的形式表示控制信息。
Lines 8 through 11 represent control information in the form of SOAP headers.
可以使用选项控制wc的输出，或者显示其他信息，比如行的最大长度。
Options allow you to control the output from wc or to display other information such as maximum line length.
样式表提供了对字体大小以及样式、扉页留白，段落前后的空格，首行缩进，对齐以及其他很多细节信息的丰富控制。
Style sheets provide rich control over the size and style of a font, the margins, space before and after a paragraph, the first line indent, justification and many other details.
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