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In the above screenshot, the Family1 and Family variables are taken from the analysis level, not the 0 level, as the analysis node is closer in the hierarchy to the current node.
Adding, deleting and modifying variables
Adding a variable
To add a new variable, either click the green 'plus' button or use the context menu. Note that the new variable will always be added to the selected node, even if you right-click within the variables section belonging to a parent in the hierarchy.
Deleting a variable
To delete a variable, either click the red 'X' button or use the context menu. Note that it is only possible to delete variables from the currently-selected node. You cannot delete variables from ancestors in the hierarchy; to do this, you must first select their node in the tree (or use the breadcrumbs).
Editing a variable
To edit a variable, either select it and then click the 'pencil and paper' icon, or right-click the variable and choose 'Edit variable' from the context menu. A shortcut is to double-click the variable. A simple dialogue allows for the modification of the variable's value:
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