Feature to view all bookmarks saved in the nested collections within the selected collection.

For example:

Primary Collection

-- Nested Collection 1

-- Nested Collection 2

Option 1:

Clicking on "Primary Collection" will show all bookmarks from Primary Collection, Nested Collection 1, and Nested Collection 2.

Option 2:

Link above bookmarks in Primary Collection or in "View" menu may be clicked to show all bookmarks from Primary Collection, Nested Collection 1, and Nested Collection 2.