treectrl(n) on macOS
The text 15c0bc163094, as Mac OS X 10.6.8, Mac OS X 10.6.7, Mac OS X 10.6.6, Mac OS X 10.6.5, Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.6.2, Mac OS X 10.6.1, Mac OS X 10.6 shipped it.
Create and manipulate hierarchical multicolumn widgets
Flags it lists
-
-background -
-borderwidth -
-cursor -
-font -
-foreground -
-highlightbackground -
-highlightcolor -
-highlightthickness -
-orient -
-relief -
-takefocus -
-xscrollcommand -
-yscrollcommand