We would probably be clearer about what the requirement actually is if the sample source were shown
```
as text between markdown triple backticks
```
or provided as a text file attachment, rather than as a graphic image.
iThoughtsX and MindNode clipboards, for example typically paste tab-indented outlines, but your graphic showס something that might, for example, be indented by double spaces ?
PS on the output side, Markdown parsers typically (See CommonMark, for example) expect each level in the the indentation of MD bullet nests to differ by four space characters exactly.
Possibly something like this ?