How to not display lon/lat/depth and ferret version information inplot?

[Chi Ding <chi@xxxxxxxxx>]

Hi all users
    When I draw a plot, the lon/lat/depth are displayed at the left-top 
corner.
The ferret version and the time the plot is generated are at the 
right-top corner.
This causes a problem when I define multiple viewports because they 
overlap to
other viewport an and the picture is a bit messy.
     My question is how to disable them?
    Thanks a lot, Ding