Yes, you are right. ReText uses Python-Markdown which strictly follows
the Markdown rules. And the rules say:
> Each subsequent paragraph in a list item must be indented by either 4
spaces or one tab
https://daringfireball.net/projects/markdown/syntax#list
This applies not only to paragraphs but
I found the problem. There has to be 4 spaces in nested items. I did it
always wrong because many other editors have their own version of
Markdown standard. This is chaos.. :-(
This works in ReText:
```
# Nested lists
* topic1
* item1
* item2
* topic2
* item3
* item4
---
1. top
