diff --git a/content/about-treehouse.tree b/content/about-treehouse.tree
index a833e95..8215682 100644
--- a/content/about-treehouse.tree
+++ b/content/about-treehouse.tree
@@ -41,14 +41,9 @@
                 + *where?*
 
                     % id = "01H89RFHCQW4NN6PW6V6RFCVH3"
+                      content.link = "about-treehouse/uh"
                     + ***WHERE???***
 
-                        % id = "01H89RFHCQ83APVW034YC40K5P"
-                        + here, actually.
-
-                            % id = "01H89RFHCQ0SYWSQZDYHRXKAR0"
-                            - I lied. I didn't build this tech to support infinite nesting, as that would require infinite disk space. which I don't have.
-
         % id = "01H89RFHCQPAMNSN81SRVH2TZ5"
         - always evolving and shaping and shifting
 
diff --git a/content/about-treehouse/uh.tree b/content/about-treehouse/uh.tree
new file mode 100644
index 0000000..9b5044c
--- /dev/null
+++ b/content/about-treehouse/uh.tree
@@ -0,0 +1,3 @@
+% content.link = "about-treehouse/uh"
+  do_not_persist = true
++ …
diff --git a/crates/treehouse/src/cli/regenerate.rs b/crates/treehouse/src/cli/regenerate.rs
index 8ae097d..1b5dee0 100644
--- a/crates/treehouse/src/cli/regenerate.rs
+++ b/crates/treehouse/src/cli/regenerate.rs
@@ -154,6 +154,11 @@ impl Generator {
                     }
                 };
 
+                std::fs::create_dir_all(
+                    target_path
+                        .parent()
+                        .expect("there should be a parent directory to generate files into"),
+                )?;
                 std::fs::write(target_path, templated_html)?;
             }
         }
diff --git a/crates/treehouse/src/html/tree.rs b/crates/treehouse/src/html/tree.rs
index 4892cfc..6363ace 100644
--- a/crates/treehouse/src/html/tree.rs
+++ b/crates/treehouse/src/html/tree.rs
@@ -37,9 +37,15 @@ pub fn branch_to_html(
         String::new()
     };
 
+    let do_not_persist = if branch.attributes.do_not_persist {
+        " data-th-do-not-persist=\"\""
+    } else {
+        ""
+    };
+
     write!(
         s,
-        "<li is=\"{component}\" class=\"{class}\" id=\"{}\"{linked_branch}>",
+        "<li is=\"{component}\" class=\"{class}\" id=\"{}\"{linked_branch}{do_not_persist}>",
         EscapeAttribute(&branch.html_id)
     )
     .unwrap();
diff --git a/crates/treehouse/src/tree/attributes.rs b/crates/treehouse/src/tree/attributes.rs
index 9953d6e..080b385 100644
--- a/crates/treehouse/src/tree/attributes.rs
+++ b/crates/treehouse/src/tree/attributes.rs
@@ -13,6 +13,10 @@ pub struct Attributes {
     /// Controls how the block should be presented.
     #[serde(default)]
     pub content: Content,
+
+    /// Do not persist the branch in localStorage.
+    #[serde(default)]
+    pub do_not_persist: bool,
 }
 
 /// Controls for block content presentation.
diff --git a/static/js/tree.js b/static/js/tree.js
index 68c3de8..9b2eb73 100644
--- a/static/js/tree.js
+++ b/static/js/tree.js
@@ -17,8 +17,9 @@ class Branch extends HTMLLIElement {
         this.details = this.childNodes[0];
         this.innerUL = this.details.childNodes[1];
 
+        let doPersist = !this.hasAttribute("data-th-do-not-persist");
         let isOpen = branchIsOpen(this.id);
-        if (isOpen !== undefined) {
+        if (doPersist && isOpen !== undefined) {
             this.details.open = isOpen;
         }
         this.details.addEventListener("toggle", _ => {