Found a way. In the user's guide Ch10 Printing and Plotting,Section: Plot Options. Select Tools>Plot Options in the Main Window. Then in the Plot Options tab unselect the Automatic choice on the White Background. Select the Saved choice. Then when the HTML plots are generated all have white backgrounds. ::)
Select Tools>Plot Options in the Main Window.
Then in the Plot Options tab unselect the Automatic choice on the White Background. Select the Saved choice. Then when the HTML plots are generated all have white backgrounds. ::)