Purpose of Lineage tree is to provide an alternative way for navigating through a complex lineage.
How to display Lineage tree
Column context menu choose
A pop-up window will appear with textual lineage in it.
You can browse the lineage by expanding and collapsing each column.
Search lineage tree
To quickly find an object you are interested in just type its name. Search is performed across the whole tree and only relevant branches will be visible and completely expanded.
Download the tree as a .txt file
Just click on the file icon in upper right corner.