2.1.19 [W3C-HTML52] Section 4.4.6. The ol element

V0038: The reversed attribute is not supported

The specification states:

 ... The ol element
     ...
     The reversed attribute is a boolean attribute. If present, it indicates that the list 
     is a descending list (..., 3, 2, 1). If the attribute is omitted, the list is an 
     ascending list (1, 2, 3, ...).

EdgeHTML Mode

The reversed attribute is not supported.