Open the Reservoir Editor, select the Operations tab, and select the appropriate operation set.
Right-click on a zone in the Zone-Rules tree in which you want to place the new IF_Block.
Select Add IF_Block from the zone's context menu or select New from the IF_Block menu. The New IF_Block dialog will open ("Figure: New IF_Block Dialog").
Figure: New IF_Block Dialog
Enter a name (and optional description) for the new IF_Block and clickOK.
A branch in the Zone-Rules tree will appear at the bottom of the selected zone ("Figure: New IF_Block and the Conditional Expression Editor"). This branch represents the IF_Block you created. The root node of the branch will display the IF_Block's name preceded by a pair of curly brackets { }. Below the root node of the IF_Block, indented, is the node for the IF conditional block belonging to the IF_Block; this node displays the word IF preceded by a thick black arrow and followed by a label in parentheses () and. Untitled is used as the default label to remind you to give each conditional block a more appropriate label—one that describes the condition(s) defined in the conditional expression or the set of operations that will be added if the conditional expression evaluate to TRUE.
Figure: New IF_Block and the Conditional Expression Editor
When the new IF_Block is added to the Zone-Rules tree, its IF becomes the selected node and the Conditional Expression Editor for the IF is displayed in the Edit Pane ("Figure: New IF_Block and the Conditional Expression Editor"). "The Conditional Expression Editor" describes how to use the Conditional Expression Editor for defining the conditional expressions of your IF and ELSE IF conditional blocks.
