This function is used to print the current window in the 'Navigation desktop'.
When this function is activated, the message "Use Export HTML' to print the complete model" is displayed. Then the printer setting dialog box will appear to allow user to configure the printer settings. Press 'OK' to print the current frame, or 'Cancel' without printing.
The picture is resized automatically to fit the page.
Attention ! This functionality is not totally implemented. Do not use it.