The description column and similar ones in the table may contain a noun phrase following the package short description convention which drops leading articles such as "a" and "the". They may alternatively contain an infinitive phrase as a noun phrase without leading "to" following the short command description convention in manpages. These may look funny to some people but are my intentional choices of style to keep this documentation as simple as possible. These Noun phrases do not capitalize their starting nor end with periods following these short description convention.
这段话介绍了本书如何”简要描述软件包“，作者给出了例子，比如
Package: libeg0
Description: exemplification support library
正式的英文中，应该在“exemplification support library”加入（不）定冠词。
但是中文往往不需要这个，比如下面这样是很正常的。
软件包：libeg0
描述：例子支持库文件
即使在正式汉语中，也很少这样说，“一个例子支持库文件”。
另外这里还提到了不定式，比如
Package: weblate-debian-reference-cn
Description: translate debian reference into Chinese
正式英语中要求加入to表示不定式，“to translate debian reference into Chinese”
汉语也完全没有这个问题。