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+---
+layout: note
+title: Markdown style guide
+---
+
+* `diff`- and HTML-friendliness is valued over human-readability.
+* Every sentence starts on a new line ("semantic newlines").
+* Lines are at most 79 characters long, not counting neither the carriage
+return, nor the line feed characters.
+    * Not 80 characters, because when you display a 80-character line with a
+line feed at the end in Windows' `cmd`, an extra empty line is added.
+* No hanging indents in lists.
+    * Nested lists are indented with 4 spaces.
+    * No hanging indents in those also.
+    * Longer items wrap at 79 characters and continue from the leftmost
+character column.
+Additional sentences start there also.
+* Prefer reference-style links over inline links.
+Omit the second pair of brackets `[]` entirely where appropriate.
+For example, [Google] is preferred over both [Google](https://ya.ru) and
+[I'm feeeling lucky][google] (see this document's source).
+* First- and second-level headers are underlined with strings of `=` and `-`.
+The number of `=`/`-` signs must be equal to the number of characters in the
+header.
+* File paths are enclosed in double quotes.
+Environment variable names are enclosed in a pair of backticks (\`) unless it's
+a part of a path.
+Executable names are enclosed in a pair of backticks (\`) unless it's a part of
+a path, a link or a header.
+* Code blocks are indented with 4 spaces.
+
+      Code blocks inside lists are indented according to the spec
+      (https://github.github.com/gfm/#list-items), i.e. the column of the first
+      non-whitespace character in the item + 4.
+
+* Don't mix fenced code blocks with indented code blocks in a single document.
+
+| In a table, | the first | row   | is underlined.
+| ----------- | --------- | ----- | --------------
+| Leftmost    | vertical  | lines | are required.
+| Rightmost   | vertical  | lines | are omitted.
+{: .table .table-bordered }
+
+[Google]: https://www.google.com/