Paragraphs and line breaks
Generally, with Markdown, one or more consecutive sentences without indents become a paragraph, and one or more blank lines will separate the paragraphs. With Standard Markdown, line breaks within a paragraph are ignored, but they will be shown in Backlog.
HTML tags
With standard Markdown, HTML tags are supported, but they will be ignored on Backlog for security reasons.
To learn more about using Markdown on Backlog, please go to Projects > Markdown.