Question type - List (Dropdown)
From LimeSurvey Manual
General description
You can also create subcategories within this list by using the advanced setting 'Category separator'.
Advanced settings
{INCLUDE(page="Advanced question settings",start="!random_order",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!random_group",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!alphasort",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!other_replace_text",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!hide_tip",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!category_separator",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!hidden",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!other_comment_mandatory",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!scale_export",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!public_statistics",stop="---")}{INCLUDE}
{INCLUDE(page="Advanced question settings",start="!page_break",stop="---")}{INCLUDE}