Halna Outliner is an outline processor that has Two panes, one for Tree part and one for Notes part. features: Separate two-panes configuration, Tree part and Notes part. 3 Display Styles (Vertical, Horizontal, Switch). Cut / Copy & Paste. Make marks. Change color. Search. Import: WZmemo. Natara Bonsai CSV. OPML. TreePad(TM). Export: Text file. WZmemo. OPML. TreePad(TM).