diff --git a/pesto/src/bulk.rs b/pesto/src/bulk.rs
index 4fbe270..e49174a 100644
--- a/pesto/src/bulk.rs
+++ b/pesto/src/bulk.rs
@@ -93,6 +93,7 @@ fn fill_docs(
         if let Some(position) = &item.docs.attr.position {
             if let Some(Some(doc_comment)) = pos_doc_map.get(&position) {
                 item.docs.attr.content = doc_comment.content.clone();
+                item.docs.attr.expr = doc_comment.expr.as_ref().map(|nix| nix.text().to_string() );
             }
         }
         if let Some(lambda) = item.docs.lambda.as_mut() {
@@ -100,6 +101,7 @@ fn fill_docs(
                 if let Some(Some(doc_comment)) = pos_doc_map.get(&position) {
                     lambda.content = doc_comment.content.clone();
                     lambda.countApplied = doc_comment.count_applied;
+                    lambda.expr = doc_comment.expr.as_ref().map(|nix| nix.text().to_string() );
                 }
             }
         }
@@ -150,10 +152,11 @@ impl<'a> BulkProcessing for Pasta {
             if let Some(orig_file) = when_overridable_lambda(doc, &file_idx_map) {
                 let orig_lambda = get_overridable_fn(&orig_file);
                 let orig_pos =
-                    orig_lambda.map(|n| seek_file_position(&orig_file, &n.text_range().start()));
+                    orig_lambda.as_ref().map(|n| seek_file_position(&orig_file, &n.text_range().start()));
                 if let Some(orig_pos) = orig_pos {
                     if let Some(l) = &mut doc.docs.lambda {
                         l.position = orig_pos;
+                        l.expr = orig_lambda.as_ref().map(|n| n.text().to_string());
                         restores.push(format!("{:?}", doc.path.join(".")));
                     }
                 }
diff --git a/pesto/src/comment.rs b/pesto/src/comment.rs
index 304166f..bf93b86 100644
--- a/pesto/src/comment.rs
+++ b/pesto/src/comment.rs
@@ -53,18 +53,18 @@ impl DocComment for ast::Comment {
 /// If the doc-comment is not found in place (1) the search continues at place (2)
 /// More precisely before the NODE_ATTRPATH_VALUE (ast)
 /// If no doc-comment was found in place (1) or (2) this function returns None.
-pub fn get_expr_docs(expr: &SyntaxNode) -> Option<String> {
+pub fn get_expr_docs(expr: &SyntaxNode) -> Option<(String, SyntaxNode)> {
     if let Some(doc) = get_doc_comment(expr) {
         // Found in place (1)
-        doc.doc_text().map(|v| v.to_owned())
+        doc.doc_text().map(|v| (v.to_owned(), expr.clone()))
     } else if let Some(ref parent) = expr.parent() {
         match_ast! {
             match parent {
                 ast::AttrpathValue(_) => {
                     if let Some(doc_comment) = get_doc_comment(parent) {
-                        doc_comment.doc_text().map(|v| v.to_owned())
+                        doc_comment.doc_text().map(|v| (v.to_owned(), parent.clone()))
                     }else if let Some(comment) = get_comment(parent) {
-                        Some(comment.text().to_owned())
+                        Some((comment.text().to_owned(),parent.clone()))
                     } else {
                         None
                     }
diff --git a/pesto/src/main.rs b/pesto/src/main.rs
index 491bf0b..dd9371f 100644
--- a/pesto/src/main.rs
+++ b/pesto/src/main.rs
@@ -174,8 +174,10 @@ struct DocumentFrontmatter<'a> {
     is_functor: Option<bool>,
     /// Where the attribute is defined at.
     attr_position: Option<&'a FilePosition>,
+    attr_expr: Option<&'a String>,
     /// Where the original lambda is defined at.
     lambda_position: Option<&'a FilePosition>,
+    lambda_expr: Option<&'a String>,
     /// How many times the function is applied.
     count_applied: Option<usize>,
     content_meta: Option<SourceOrigin<'a>>,
@@ -201,12 +203,14 @@ impl<'a> FromDocs<'a> for Document<'a> {
                 path: &item.path,
                 aliases: item.aliases.as_ref(),
                 attr_position: item.docs.attr.position.as_ref(),
+                attr_expr: item.docs.attr.expr.as_ref(),
                 lambda_position: item
                     .docs
                     .lambda
                     .as_ref()
                     .map(|i| i.position.as_ref())
                     .flatten(),
+                lambda_expr: item.docs.lambda.as_ref().map(|i| i.expr.as_ref()).flatten(),
                 is_primop: item.docs.lambda.as_ref().map(|i| i.isPrimop),
                 is_functor: item.docs.lambda.as_ref().map(|i| i.isFunctor).flatten(),
                 count_applied: item.docs.lambda.as_ref().map(|i| i.countApplied).flatten(),
diff --git a/pesto/src/pasta.rs b/pesto/src/pasta.rs
index ae004cf..ce73d86 100644
--- a/pesto/src/pasta.rs
+++ b/pesto/src/pasta.rs
@@ -30,12 +30,16 @@ pub struct LambdaMeta {
     pub content: Option<String>,
     #[allow(non_snake_case)]
     pub countApplied: Option<usize>,
+    // Serialized AST
+    pub expr: Option<String>,
 }
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct AttrMeta {
     pub position: Option<FilePosition>,
     /// I want to add this
     pub content: Option<String>,
+    // Serialized AST
+    pub expr: Option<String>,
 }
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct DocsMeta {
diff --git a/pesto/src/position.rs b/pesto/src/position.rs
index 6231312..d106193 100644
--- a/pesto/src/position.rs
+++ b/pesto/src/position.rs
@@ -498,15 +498,21 @@ impl<'a> DocComment<'a> for DocIndex<'a> {
                 let doc = match expr.kind() {
                     rnix::SyntaxKind::NODE_LAMBDA => {
                         let (_outer_lambda, count_applied) = get_parent_lambda(&expr);
+                        let res = get_expr_docs(&expr);
+
                         NixDocComment {
-                            content: get_expr_docs(&expr),
+                            content: res.as_ref().map(|v| v.0.to_owned()),
                             count_applied: Some(count_applied),
+                            expr: res.as_ref().map(|v| v.1.to_owned()),
                         }
                     }
-                    _ => NixDocComment {
-                        content: get_expr_docs(&expr),
+                    _ => {
+                        let res = get_expr_docs(&expr);
+                        NixDocComment {
+                        content: res.as_ref().map(|v| v.0.to_owned()),
                         count_applied: None,
-                    },
+                        expr: res.as_ref().map(|v| v.1.to_owned()),
+                    }},
                 };
                 return Some(doc);
             }
@@ -535,6 +541,7 @@ impl<'a> DocComment<'a> for DocIndex<'a> {
 pub struct NixDocComment {
     pub content: Option<String>,
     pub count_applied: Option<usize>,
+    pub expr: Option<SyntaxNode>,
 }
 
 fn get_parent_lambda(expr: &SyntaxNode) -> (SyntaxNode, usize) {
diff --git a/website/src/app/f/[...path]/page.tsx b/website/src/app/f/[...path]/page.tsx
index a805b48..681e0dc 100644
--- a/website/src/app/f/[...path]/page.tsx
+++ b/website/src/app/f/[...path]/page.tsx
@@ -177,6 +177,8 @@ export default async function Page(props: { params: { path: string[] } }) {
     return undefined;
   }
 
+  const expr_code = (meta?.lambda_expr || meta?.attr_expr) ?? null;
+
   return (
     <>
       <Toc mdxSource={source + externManualSrc} title={item?.meta.title} />
@@ -315,7 +317,8 @@ export default async function Page(props: { params: { path: string[] } }) {
           <MDX source={source} />
           {meta && <PositionLink meta={meta} content={item?.content} />}
           <div data-pagefind-ignore="all">
-            {(!!meta?.aliases?.length ||
+            {(expr_code ||
+              !!meta?.aliases?.length ||
               (!!signature && !meta?.signature) ||
               meta?.is_functor) && (
               <>
@@ -330,7 +333,7 @@ export default async function Page(props: { params: { path: string[] } }) {
                     textAlign: "center",
                   }}
                 >
-                  Noogle also knows
+                  Noogle detected
                 </Typography>
               </>
             )}
@@ -347,13 +350,7 @@ export default async function Page(props: { params: { path: string[] } }) {
             )}
             {!!meta?.aliases?.length && (
               <>
-                <Typography
-                  variant="h5"
-                  component={"h5"}
-                  sx={{ color: "text.secondary" }}
-                >
-                  Aliases
-                </Typography>
+                <MDX source={`## Aliases`} />
                 <ul>
                   {meta?.aliases?.map((a) => (
                     <li key={a.join(".")}>
@@ -377,6 +374,33 @@ export default async function Page(props: { params: { path: string[] } }) {
                 <MDX source={`\`\`\`haskell\n${signature.trim()}\n\`\`\`\n`} />
               </>
             )}
+            {meta?.is_primop && (
+              <Box>
+                <MDX
+                  source={`## Implementation
+:::{.tip}
+This function is implemented in c++ and is part of the native nix runtime.
+:::
+`}
+                />
+              </Box>
+            )}
+            {expr_code && (
+              <Box>
+                <MDX
+                  source={`## Implementation
+:::{.tip}
+The following is the current implementation of this function.
+
+\`\`\`nix
+${expr_code.trim()}
+\`\`\`
+
+:::
+`}
+                />
+              </Box>
+            )}
           </div>
         </Box>
         <Divider flexItem sx={{ mt: 2 }} />
diff --git a/website/src/models/data/index.ts b/website/src/models/data/index.ts
index 7b0557e..1ff01b6 100644
--- a/website/src/models/data/index.ts
+++ b/website/src/models/data/index.ts
@@ -38,7 +38,9 @@ export type DocMeta = {
   is_functor?: boolean;
   primop_meta?: PrimopMatter;
   attr_position?: FilePosition;
+  attr_expr?: string;
   lambda_position?: FilePosition;
+  lambda_expr?: string;
   count_applied?: number;
   content_meta?: SourceOrigin;
   signature?: string;