[= |0]
[>1|1]Paragraphs (even at indentation 0) outside markers
[<1|1]also create folds.
[= |0]
[>1|1]Paragraphs on the same level
[<1|1]do not swallow empty lines.
[= |0]
[>1|1]## Marker 1
[= |1]Single line paragraphs do not create folds, neither right after markers...
[= |1]
[= |1]...nor on their own.
[= |1]
[>2|2]But lines below with more indentation are counted as part of the same fold...
[= |2]
[>3|3]  ...while still being able to create
[<4|3]    folds
[<2|3]  of their own.
[= |1]
[>2|2]### Marker 2
[<3|2]Wider markers create higher fold levels.
[= |2]
[>3|3]  #### Marker 3
[= |3]  Indentation does not affect marker fold levels.
[= |3]
[<4|3]  Marker folds of the same level swallow empty lines...
[= |3]
[>3|3]  #### Marker 3
[= |3]
[>4|4]  ##### Marker 4
[<4|4]  ...but ones on different levels do not.
[= |3]
[>3|3]  #### Marker 3
[<3|3]  Higher level folds are ended when the indentation drops.
[= |2]
[<1|2]Leading and trailing empty lines are not part of folds.
[= |0]
