Preferences: Contours
Opening the contour settings preferences
To access the Contour Settings window, go to:
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                                                        File > Preferences > Tracing > Contours 
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                                                        Click the cog icon  in the Contours section on the Trace ribbon in the main Stereo Investigator Whole Slide Edition window. in the Contours section on the Trace ribbon in the main Stereo Investigator Whole Slide Edition window.
Buttons and commands
Create New Contour box
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                                                        (optional) Type a name for the new contour into the box that says Contour Name. 
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                                                        Click the Add Contour button: your new contour is added to the bottom of the table on the right side of the Contour Settings window 
All Visible button: Click to make all hidden contours become visible.
None Visible button: Click to hide all contours.
Set Color button: Highlight a contour type then click the button to change the contour color (you may also double-click the color box next to the contour name).
Default Colors button: Restores the default colors.
Table with contour names, color, visibility
Contour Name column: To change a contour name, click the name (the table cell will become highlighted), then type in the new name. Keep the name under 12 characters.
Color column: double-click the color you want to change to open a color-picker. Select the desired color, then click the OK button to assign it to the contour.
Hidden column: Check the box to hide the contour type (see also Hidden objects)
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                                                        When a contour type is marked as hidden, it is not available from the Contour drop-down list in the Main toolbar. 
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                                                        If you have used a contour type to trace structures, then hidden the contour type, the hidden contours become invisible (until you unhide them by clearing the checkbox). 
Also see Tracing contours (2D)