Suppose that the focus node of the Node Prior-Info. window is of a certain type X, and that this node satisfies certain minimum conditions that all type X nodes must satisfy. Then pressing the Generate Amplitudes... button of the Node Prior-Info. window will open a dialog window which depends on the node type X. This dialog window will allow you to specify certain parameters that completely characterize type X nodes. Such dialog windows are entitled ``Parameters of X". In the next few sections, we will discuss all ``Parameters of X" windows. We will discuss them separately for each X. But first, let us discuss some traits common among them.
All ``Parameters of X" windows contain an OK and a Cancel button.
When you dismiss such a window by pressing OK, the computer changes the transition matrix and states stored in memory for the focus node so that they are consistent with the parameters that you've specified.
When you dismiss such a window by pressing Cancel, the computer does not change the transition matrix or the states of the focus node. They remain the same as they were immediately before you pressed the Generate Amplitudes... button.
For some X's, type X nodes have photons as inputs and outputs. For such nodes, it is convenient to make the following definitions:
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