There are different indicators to define how multiline strings in YAML files behave.
Block style indicators describe how line breaks behave: With a
| (literal style) they are kept as a line break. With a
> (folded style) they are converted to a space.
Block chomping indicators describe how line breaks at the end of the string behave:
+ keeps all of them,
- removes them. Without an indicator, one line break will be added to end of the string.