Apply & Okay: When you make changes in the table dialog box, they do not affect the node until you click the Apply or Okay button. Then all the settings are transferred to the node in the net. The Apply and the Okay buttons have the same function, except the Okay button also removes the dialog box after transferring the settings.
Reset: Clicking the Reset button will transfer the current values from the node in the net to the dialog box. There are two main uses for this button. The first is if you make a mistake while you are changing the table, and you haven’t yet clicked the Apply button, you can “revert” to the original node by clicking the Reset button (if you have already clicked the Apply button, you should make the net window active, do an Edit → Undo, then go back to the table dialog box and click Reset). The second use for the Reset button is to update the table dialog box after something else has changed the relation of the node.
For example, you might be solving a decision net repeatedly, while varying some part of it. After each solution you want to see how the optimal decision function has changed. You would bring up the table dialog box for a decision node, leave it up, and after each re-solution of the net you would click the Reset button to observe the changes in the tables. Another example is that you are having Netica learn a Bayes net from a number of case files, and you want to observe how the conditional probabilities change as the learning process continues.
Changed *: If you make any changes to the table, but have not yet pressed either the Apply or Okay button, then a * will be displayed in the window's title bar to show that the table is currently different from that of the node in the net. If instead the node in the net is changed by something else (such as learning from data, solving an optimization, another table dialog box, etc.), then an asterisk in parenthesis is placed in the window's title bar: (*)
Close: If
you click the Close button, or
the 
button in the title bar, or choose File
→ Close
while the dialog is active,
then it will be removed. If you previously made some changes in
it, and haven’t clicked the Apply
button, Netica will ask if you want to apply those changes first.