diff --git a/content/docs/external/_index.md b/content/docs/external/_index.md
new file mode 100644
index 0000000..6e965f9
--- /dev/null
+++ b/content/docs/external/_index.md
@@ -0,0 +1,3 @@
+---
+bookFlatSection: true
+---
\ No newline at end of file
diff --git a/content/docs/internal/_index.md b/content/docs/internal/_index.md
new file mode 100644
index 0000000..6e965f9
--- /dev/null
+++ b/content/docs/internal/_index.md
@@ -0,0 +1,3 @@
+---
+bookFlatSection: true
+---
\ No newline at end of file