The following example shows how extracted comments look like, if wall removing did not work properly: 

* Section starter one: Section text one 

* 

* Section starter two: Section text two 

* 

** 

If the walls cannot be removed, section starters are not the first characters at the beginning of the line and are not detected. Walls consisting of characters that may also be used for lists are interpreted as lists, but only if there is text in the same line.