How NetBeans sets up line wrapping

First Use NetBeans (8.2), open the Edit page found unable to wrap, after some groping, set the success, now set the steps to summarize:

• The first step: Open Tools >>> options >>> Editor >>> formatting,

• Step two: Remove the tick, modify the auto-wrap parameters

Modify the "right margin" parameter value is 0, can eliminate the edit page of the red vertical line (currently do not know the role of the red vertical line, looking awkward)

• Step three: Click "OK" to

When Baidu looks for a setup method, it says "Tools >>> options >>> Editor >>> formatting >>> category selection for line break"

After the operation, it found no effect. The line-break settings Here are complex and are not fully understood at the moment, and are used as default settings.

How NetBeans sets up line wrapping