Sorting response lists containing subheadings
If a response list contains subheadings, you must put the ordering keyword in the right place to achieve the results you require. Think of the response list as having a hierarchical structure in which the ordering keyword applies only to the level at which it appears in the interview script. If the keyword appears on a subsection, it applies to only the contents of that subsection; if the keyword appears at the main response-list level, it applies to the subsections themselves and not to their contents.
See also