如何在word文档里面加一条横线?

今天在改一个word文档，以前用MS Word在里面加了一条横线，现在用open office writer是删除也删除不了这个横线；想自己加一条横线也加加不了，真郁闷，众位Word/OpenOffice达人谁知道怎么在文档里面加条横线／删除横线阿？

好！有解了！

原来这条横线是一种样式(Style): Section Title, 选择Clear formatting去除这种样式就可以了。

另外一种添加横线的方式是：

This problem may occur if both of the following conditions are true:

The line was created by typing a series of 3 or more characters
and then pressing ENTER. The characters include the hyphen (-),
underscore (_), equal sign (=), asterisk (*), tilde (~), and number
sign (#).

-and-

The AutoFormat As You Type feature in Word is configured to automatically format borders.

As
a result, when you type a series of 3 or more of these characters, and
then press ENTER, Word automatically changes the characters that you
typed to a line (that is, a border).