this Omnioutliner application is good to use with various features.

in my personal view

core pros.

1. good appearance

2. front-end application among the mark down applications on OSX

3. compatible with Devonthink: this make quit easy to take notes.

cons.

1. too expensive

2. need independent applicable check-box on the specific mark down lists.

(currently on the menu, there is ‘show status checkbox’ on/off. but this turn on/off checkbox for hole mark down list)