Boundary Visibility
Boundary visibility can be specified using the following options.
Show All Boundaries / Hide All Boundaries
To quickly show or hide all boundaries which have been added to a view, select Show All Boundaries or Hide All Boundaries from the Boundaries > Edit menu.
Hide Individual Boundaries
To hide an individual boundary, right-click on the boundary and select Hide from the popup menu.
To re-display tools which have been hidden, select Show All Boundaries from the Boundaries > Edit menu, or from the default right-click menu. The visibility of individual boundaries can also be changed from the Display Options dialog or from the Sidebar.
The visibility status of boundaries is saved when you save the file, so you should keep this in mind if you have hidden boundaries (i.e. hidden boundaries will not be visible when you re-open the file).