documentation/tutorial.md

@@ -163,7 +163,7 @@ Beams oriented along the **X axis**, used to carry purlins or panels across the
 | `RafterLength` | meters | Length of each rafter |
 | `NumberOfRafters` | — | Number of rafters per group (1–10) |
 
-**Diagonals**
+###### Diagonals
 
 Diagonal bracing bars connecting two poles to stiffen the structure against lateral loads.