====== Relationships window ======

Select **Window | Relationships** to access this window.

The relationships window displays relationships between blocks in the model. Three types of relations are displayed:
  * Reference - When a block is used in an equation for another block. 
  * Transfer - Connections between [[compartment|compartments]] and [[transfer|transfer blocks]]. 
  * Connector - When a block is used as an input for another block.

This window serves a similar purpose of the information window, but with a graphical interactive approach. It is useful to see how the different blocks are related and also, when used together with the result window, for debugging models.

To create a relationship graph, select the block of interest in some other view. The window now updates to show the selected block as well as all blocks it has direct relations with. 

==== Trailing ====

When a graph has been created, relatives of the selected block may display a small plus (+) symbol in the upper left corner. Clicking this button will add all the relations with the clicked block. This way you can navigate and trail the relationships from a given block.

==== Direction ====

By default all relations of the selected block are displayed, but you can choose to show only incoming or outgoing relations by clicking the corresponding title bar buttons or by right-clicking and choosing the direction from the popup menu. 

The images below show the relations for the //Concentration Sediment// expression.

|All relationships|Incoming relationships|Outgoing relationships|
|{{:screenshots:direction_both.png?nolink|}}|{{:screenshots:direction_incoming.png?nolink|}}|{{:screenshots:direction_outgoing.png?nolink|}}| 
===== Title bar =====

The title bar has short-cuts for common tasks:

|{{:zoomselection24.png}}    |Adjust zoom to show the full graph|
|{{:zoomin24.png}}           |Zoom in|
|{{:zoomout24.png}}          |Zoom out|
|{{:toolbar:both24.png}}     |Shows all relationships|
|{{:toolbar:backwards24.png}}|Shows only outgoing relationships|
|{{:toolbar:forwards24.png}} |Shows only incoming relationships|

===== Menu =====

To display the menu, right click anywhere inside the window. 

|Toggle grid|Turn the graph grid on/off|
|Print...|Print the current graph.|
|Zoom||
|Zoom in|Zoom in|
|Zoom out|Zoom out|
|Restore zoom|Adjust zoom to show the full graph|
|Direction||
|Both|Show both incoming and outgoing relations|
|Outgoing|Show only outgoing relations|
|Incoming|Show only incoming relations|
|Tools||
|Export...|Export the graph to an image, SVG or Powerpoint. See [[exporting images]].
|Layout|Perform a new layout of the graph|
===== See also =====

  * [[Information window]]