documentation/tutorial.md

@@ -108,6 +108,10 @@ The `StructureType` parameter determines the overall logic and available compone
 - **PV Table**: Fixed tilted tables with poles, rafters, diagonals, and purlins.
 - **HSATS** (Horizontal Single Axis Tracker): Tracking systems with rotating rafters.
 
+![Structure types](uploads/structure/structure types.png)
+
+Figure 4 - Structure types. HSATS is a tracking system, PV Table and Agrivoltaic Fence are fixed systems.
+
 #### Structure Components
 A structure is built from several elementary objects. You can customize the dimensions and shape of each: