A list of a layout tree: its items are its ListItem children, each with an optional Label and a ListBody that holds any nested list.
public sealed class LayoutList : LayoutNode
ISO 32000-2 §14.8.4.8.2, Table 370 (L, LI, LBody) and Table 368 (Lbl); §14.8.5.5, Table 385 (ListNumbering).
kind:method, kind:property, kind:ctor. Press Esc to clear.NumberingGets how the items are numbered, as a ListNumbering value: None, Unordered, Description, Disc, Circle, Square, Ordered, Decimal, UpperRoman, LowerRoman, UpperAlpha or LowerAlpha. For a tagged list it is the element's attribute in effect (None by default, or whatever name the file holds); for a detected list it is read from the items' markers (Unordered for a bullet that is not a disc, circle or square).