In case the nulls are sorted first (as if being ranked higher than the non-null values), I would expect them to appear in the beginning of the list for the descending order and in the end of the list in the ascending order\.

Existing Wording:

When the data being sorted includes nulls, they are sorted first, meaning they will appear at the beginning of the list when the data is sorted ascending, and at the end of the list when the data is sorted descending.