Documentation in README

README.md

@@ -96,6 +96,29 @@ tex-fmt -k file.tex     # keep lines, do not wrap
 tex-fmt -h              # view help information
 ```
 
+### Disabling the formatter
+
+Ending a source line with `% tex-fmt: skip` disables the formatter for that line.
+To disable the formatter for a block, use `% tex-fmt: off` and `% tex-fmt: on`.
+
+``` tex
+\documentclass{article}
+
+\begin{document}
+
+This line is skipped % tex-fmt: skip
+
+% tex-fmt: off
+  These lines are also
+    not formatted or wrapped
+% tex-fmt: on
+
+\end{document}
+```
+
+Verbatim environments including `verbatim`, `Verbatim`, `lstlisting`
+and  `minted`, are automatically skipped.
+
 ## Performance
 
 When formatting all of the test cases,
@@ -105,6 +128,11 @@ tex-fmt is over a thousand times faster than latexindent.
 | --- | --- | --- | --- | --- | --- |
 | 49 | 94k | 3.5M | **0.096s** | 97s [x1001] | 125s [x1288] |
 
+## Contribution
+
+Please feel free to open an issue or submit a pull request,
+including as much information as you can.
+
 ## Limitations
 
 - Semantic parsing of LaTeX code not conducted