Adding, Removing and Editing Nodes in the Logic-Tree

When viewing the operating requirements, there are three buttons which allow you to edit the logic tree.

The Add button allows you to add nodes (Gate nodes or variable nodes) to the logic tree.

It appears as:

in the standard reliability dialog, and

in the expanded sub-window.

The Remove button allows you to delete gates and conditions from the logic tree. It appears as:

in the standard reliability dialog, and

in the expanded sub-window.

The Edit button allows you to edit certain types of nodes (variable nodes) in the logic tree. It appears as:

in the standard reliability dialog, and

in the expanded sub-window.

Selecting a variable node type and clicking the Edit button (or double-clicking the node) displays the same dialog that appeared when the node was added.