====== Tutorial 5 - Adding the Components to a Library ======

===== 5/5 =====

As a final step, add the three components to the built-in library.

{{tutorial_5_7.png?500}}

  - Right-click the //Agricultural Land// sub-system in the [[Projects_window|Projects window]]. Select **Library |Add to library**.\\
  - In the window that appears, write a description of the sub-system. Click **Ok**.
  - Add the two remaining sub-systems to the library.
  - Create a new project by clicking the {{:New24.png|New}} button on the [[Menu_bar#Toolbar|toolbar]] or by selecting **File | New** from the [[Menu_bar|Menu bar]].
  - Right-click a diagonal cell in the matrix and select **Get from library…**
  - Select the //Agricultural Land// sub-system and click **Ok**.
  - Right-click another diagonal cell in the matrix and select **Get from library…**
  - Select the //Concentrations in Food// sub-system and click **Ok**.
  - When you add a sub-system which has inputs with the same name as outputs in other sub-systems, Ecolego will ask you if you want to connect these inputs. Answer **Yes** to this question.
  - Right-click another diagonal cell and add the //Doses// sub-system to the model.
  - Run a simulation and see if you get the same results as before.\\

**Solution to the excersise**

  * {{soil_dose.eco}}


**Previous**

  * [[Tutorial_5-Connecting_the_Sub-systems|Connecting the Sub-systems (4/5)]]

**References**

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