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PNLGEN
Generates panel data for each shell group that is perpendicular to the global coordinate system Z-axis. Each panel will have BBC number equal to the panel number and the force option and displacement type equal to 1. This command uses the first element of group to determine the panels orientation. This command is intended to be used on a nonlinear panel model. The shells in the model have to have been regrouped using at least the WALLFLR command as shown in Creating a Nonlinear Panel Model.