Before you begin using OLX (open learning XML) to set up a course, you should understand the building blocks of an edX course.
Courseware is the main content of your course and consists mainly of lessons and assessments. The following list describes how courseware is organized in OLX.
sequentialelements at this level. OLX supports any XBlock at this level.
vertical, and leaf-nodes or content elements, such as
problem. Studio has a fixed hierarchy where children of
verticalelements (called units), and children of
verticalelements are leaf elements (called modules).
For more information, see The Courseware Structure.
In addition to the courseware described above, you course can contain supplemental content, such as textbooks, custom pages, and files. The following list describes the types of supported content.