Building the plain list item context.

src/parser/parser_context.rs

@@ -106,9 +106,14 @@ impl<'r, 's> ContextTree<'r, 's> {
 
 #[derive(Debug)]
 pub enum ContextElement<'r, 's> {
+    /// Stores a reference to the entire org-mode document being parsed.
+    ///
+    /// This is used for look-behind.
     DocumentRoot(&'s str),
     ExitMatcherNode(ExitMatcherNode<'r>),
     Context(&'r str),
+
+    /// Stores the indentation level of the current list item
     ListItem(usize),
 }