By default, single newlines in Markdown are treated as spaces (they do not produce a <br>). nuartz enables the remarkBreaks plugin so that single newlines in your prose render as hard line breaks — matching Obsidian's behaviour.
Example
Line one
Line two
Line threeRenders as:
Line one
Line two
Line three
Without this plugin, the three lines would collapse into a single line of text.
Disabling
If you prefer standard Markdown behaviour (single newlines = space), remove remarkBreaks from the pipeline in packages/nuartz/src/markdown.ts.
Note
This plugin runs before remarkCallout, which is why the callout plugin explicitly strips leading break nodes from callout bodies.