diff --git a/README.md b/README.md
index c154c7a..e255911 100644
--- a/README.md
+++ b/README.md
@@ -6,11 +6,6 @@ This seems intended by the creators of the language.
 
 #### TODO
 
-- print header tree
 - delph deeper into different Markdown implementations (like CommonMark)
 - add support for "Setext-style headers"
-
-#### logic ideas
-
-For a tree structure you will probably need parent/child relationships.\
-You might need to create a parent and a child field in the header struct.
+- maybe remove pound signs infront of headers
diff --git a/tree.go b/tree.go
index 67bd79b..d615551 100644
--- a/tree.go
+++ b/tree.go
@@ -93,15 +93,13 @@ func get_child_indices(header_index int, headings []heading) []int {
 
 func tree(index int, prefix string, headings []heading) {
 	children := get_child_indices(index, headings)
-	//fmt.Printf("children: %v\n", children)
 
 	for index, child_index := range children {
-		//fmt.Printf("child_index: %d\n", child_index)
 		if index == (len(children) - 1) {
-			fmt.Println(prefix+"`--", headings[child_index].text)
+			fmt.Printf("%s %s (%d)\n", prefix+"`--", headings[child_index].text, headings[child_index].line)
 			tree(child_index, prefix+"    ", headings)
 		} else {
-			fmt.Println(prefix+"|--", headings[child_index].text)
+			fmt.Printf("%s %s (%d)\n", prefix+"|--", headings[child_index].text, headings[child_index].line)
 			tree(child_index, prefix+"|   ", headings)
 		}
 	}