Compare label format, retain labels, and use labels.

src/types/lesser_element.rs

@@ -42,6 +42,9 @@ pub struct ExampleBlock<'s> {
     pub name: &'s str,
     pub switches: Option<&'s str>,
     pub number_lines: Option<SwitchNumberLines>,
+    pub retain_labels: bool,
+    pub use_labels: bool,
+    pub label_format: Option<&'s str>,
     pub contents: &'s str,
 }