Since you can add an IF_Block wherever you can add a rule, the functions for managing them are similar to those for managing rules. You can create, rename, and delete IF_Blocks, as well as add or remove existing IF_Blocks from one or all zones. But there's one additional function that is available for IF_Blocks that is not available for rules—duplicate.
Most of the IF_Block management functions are available from the IF_Block menu in the Menu bar of the Reservoir Editor when the Operations tab is active. And, except for New… and Delete…, the same functions are available from the IF_Block context menu ("Figure: Reservoir Editor - Operations Tab - IF_Block Menu and Context Menu"). Because of this duplication, the following sections will focus on the use of the context menu; however, you should use the menu you are most comfortable with—the context menu from the tree nodes or the menu in the menu bar. If you are more comfortable with the menu in the Menu bar, replace the words "right-click on" with "select" and "context menu" with the appropriate menu for the operation (IF_Block).
The Zone menu and the zone context menu include the remaining the IF_Block management functions. These menus and their IF_Block functions are shown in "Figure: Reservoir Editor - Operations Tab - Zone Menu and Context Menu".
The contents in the IF_Block and Zone menus are sensitive to the currently selected node in the Zone-Rules tree. For example, the New… function in the IF_Block menu is only active when the currently selected node in the tree is a zone or conditional block.
"Creating an IF_Block", "Using an Existing IF_Block", "Copying an IF_Block", "Prioritizing an IF_Block", "Removing an IF_Block", and "Deleting an IF_Block" describe each of the IF_Block management features. Editing IF_Blocks is covered in "Editing IF_Blocks".