python-control
diff --git a/‎control/tests/freqplot_test.py‎
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diff --git a/‎doc/control.rst‎
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diff --git a/‎doc/freqplot-gangof4.png‎
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diff --git a/‎doc/freqplot-mimo_bode-default.png‎
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diff --git a/‎doc/freqplot-mimo_bode-magonly.png‎
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diff --git a/‎doc/freqplot-mimo_svplot-default.png‎
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diff --git a/‎doc/freqplot-nyquist-custom.png‎
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diff --git a/‎doc/freqplot-nyquist-default.png‎
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diff --git a/‎doc/freqplot-siso_bode-default.png‎
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diff --git a/‎doc/freqplot-siso_bode-omega.png‎
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@@ -610,6 +610,9 @@ def test_freqplot_errors(plt_fcn):
     for args in test_cases:
         test_response_plots(*args, ovlinp=False, ovlout=False, clear=False)
 
+    # Reset suptitle_frame to the default value
+    ct.reset_defaults()
+
     # Define and run a selected set of interesting tests
     # TODO: TBD (see timeplot_test.py for format)
 
 
@@ -51,6 +51,7 @@ Frequency domain plotting
     gangof4_plot
     nichols_plot
     nichols_grid
+    suptitle
 
 Note: For plotting commands that create multiple axes on the same plot, the
 individual axes can be retrieved using the axes label (retrieved using the