Privide Keyboard Shortcut for Removing Boundaries
While often using Ctrl + Shift + B for setting a boundary, it's always an annoying break in the flow to navigate the "Remove Boundary" button: Unfortunately, it needs
1. clicking the button for the the Boundary menu,
2. carefully moving the cursor within the Boundary menu to the Delete Boundary command,
3. finally, clicking the Delete Boundary command.
Alternatively, provide a separate"Delete Boundary" button, which users may display in the customized Quick Access Toolbar.