diff --git a/src/event.rs b/src/event.rs
index 87254f7..38a699f 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -6,6 +6,14 @@ use crate::util::constant::TAB_SIZE;
 /// Semantic label of a span.
 #[derive(Clone, Debug, Eq, Hash, PartialEq)]
 pub enum Name {
+    // Whole task
+    Task,
+    // Content between starting :: and ending ::
+    TaskContent,
+    // Just the starting :: and ending ::
+    TaskFence,
+    // Either starting :: or ending ::
+    TaskSequence,
     /// Attention sequence.
     ///
     /// > 👉 **Note**: this is used while parsing but compiled away.
diff --git a/src/state.rs b/src/state.rs
index 5e765c7..8296fe4 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -466,12 +466,34 @@ pub enum Name {
     TitleEscape,
     TitleInside,
     TitleNok,
+
+    TaskStart,
+    TaskOpenSequence,
+    TaskCloseSequence,
+    // TaskOpenAfter,
+    TaskContentStart,
+    TaskContentInside,
+    TaskContentEnd,
+    TaskCloseStart,
+    TaskCloseAfter,
+    // TaskAfter,
 }
 
 #[allow(clippy::too_many_lines)]
 /// Call the corresponding state for a state name.
 pub fn call(tokenizer: &mut Tokenizer, name: Name) -> State {
     let func = match name {
+        Name::TaskStart => construct::task::start,
+        Name::TaskOpenSequence => construct::task::open_sequence,
+        // Name::TaskOpenAfter => construct::task::open_after,
+        // Name::TaskAfter => construct::task::after,
+        Name::TaskContentStart => construct::task::content_start,
+        Name::TaskContentInside => construct::task::content_inside,
+        Name::TaskContentEnd => construct::task::content_end,
+        Name::TaskCloseStart => construct::task::close_start,
+        Name::TaskCloseSequence => construct::task::close_sequence,
+        Name::TaskCloseAfter => construct::task::close_after,
+
         Name::AttentionStart => construct::attention::start,
         Name::AttentionInside => construct::attention::inside,