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+# ATX headings only
+
+## paragraphs
+
+paragraphs are separated by 2 newlines
+a single newline continues the same paragraph
+
+hard line breaks\
+are added with a backslash
+
+## lists
+
+1. an ordered list starts with a number and a dot
+
+- an unordered list starts with a hyphen
+
+- for nested lists,
+  - use 4 spaces or one tab
+
+## codeblocks
+
+codeblocks are always fenced in backticks, the first token on the same line following the opening backticks is parsed as `lang` the rest is an info string, parsed as `meta`
+
+```lang info-string
+code blocks are fenced in backticks
+```
+
+## inline
+
+**strong** text is surrounded by 2 asterisks
+
+_emphasis_ text is surrounded by 1 underline
+
+`code` is wrapped in backticks
+
+## thematic breaks
+
+---
+
+thematic breaks are three or more asterisks
+
+## blockquotes
+
+> quotes start with one of these
+>
+> > quotes can be nested
+
+## links
+
+links are text in square brackets followed by a url in parens:
+
+[link text](https://url)
+
+### autolinks
+
+<mailto:auto@link>
+<https://auto-link>