[HTML/CSS]求教，change bar是什么东西，然后应用在哪些地方.

[liaa]

在撸w3c文档的时候发现的，网上查了下没有找到能解答的资料，求点醒。
文档地址 http://www.w3.org/TR/CSS2/visuren.html#bfc-next-to-float

[gucheen]

"The result is that the change bars seem to "float" to the left of the current line."
利用绝对定位（position:absolute）是的某个内容可以出现在文字段的区块外。因为本身来说，从左侧那条线到文字部分的10px的浮动，也就是正常的文字段不会出现在这个区域，可以用来做注释。
我不知道解释的恰当不恰当。
changbar，就是用来更正的栏目，就是注释啦

[liaa]

@gucheen Here is an official definition:
"When you use the change tracking features of Word, you can edit your documents and allow Word to mark what has been changed. One of the options is to include "change bars," which are nothing but vertical bars that appear in the margin of your document to indicate a line or paragraph where a change has been made."

http://word.tips.net/T000474_Setting_Change_Bars_Manually.html