The dialog has 2 tabs if the Nodal option is selected from the Functions selection list in the Diagram definition dialog:
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Nodes  The Total option is available only after the Displacement option is selected. The Velocity and Acceleration options are available only for time history analysis cases. Total displacement is equal to the length of the displacement vector (square root of the sum of the squares of component displacements). At the bottom of the dialog, you can select 1 or more nodes for which a function will be formulated. |
Reaction sum  The options at the bottom of the dialog are unavailable. |