You can display root locus, Bode phase and magnitude, and Nyquist plots. When a plot is displayed, for example, a root locus plot, and you want to change the ABCD state-space system, and regenerate the plot, you have the choice of overwriting the existing plot or creating a new plot window.
To reuse plots
•Choose Analyze > Reuse Plots.
A check mark in front of the command indicates that the command is active.