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+# An h1 header
+
+Paragraphs are separated by a blank line.
+
+2nd paragraph. _Italic_, **bold**, and `monospace`. Itemized lists look like:
+
+- this one
+- that one
+- the other one
+
+Note that --- not considering the asterisk --- the actual text content starts at
+4-columns in.
+
+> Block quotes are written like so.
+>
+> They can span multiple paragraphs, if you like.
+
+Use 3 dashes for an em-dash. Use 2 dashes for ranges (ex., "it's all in chapters
+12--14"). Three dots ... will be converted to an ellipsis. Unicode is supported.
+☺
+
+https://www.youtube.com/watch?v=_HDjDUDkdnQ
+
+## An h2 header
+
+[A link](https://www.youtube.com/watch?v=_HDjDUDkdnQ)
+
+Here's a numbered list:
+
+1.  first item
+2.  second item
+3.  third item
+
+Note again how the actual text starts at 4 columns in (4 characters from the
+left side). Here's a code sample:
+
+    # Let me re-iterate ...
+    for i in 1 .. 10 { do-something(i) }
+
+As you probably guessed, indented 4 spaces. By the way, instead of indenting the
+block, you can use delimited blocks, if you like: