How can I change the ordered list style in Document Designer?

Summary:

How can I change the style of the ordered lists in Oracle CPQ Document Designer from the default of Arabic numerals?

Content (please ensure you mask any confidential information):

How do I change the default ordered list format in the Document Designer? The only option offers Arabic numerals (i.e., "1.", "2.", "3."); I need to use other styles such as letters ("a.", "b.", "c.", etc.) or Roman numerals ("i.", "ii.", "iii.", "iv."), particularly with nested lists. This is possible in Microsoft Word as well as in HTML formatting (for example, using the "<ol style="list-style-type: lower-alpha;">" attribute).

Another Community user posted a similar question, in his case about unordered (bulleted) list styles with HTML: