+You can also use [pandoc](http://pandoc.org/demo/example9/pandocs-markdown.html)'s fenced code block extension.
+Use at least three ~ chars to open and at least as many or
+more ~ for closing.
+
+\~~~ {.numberLines}
+\int main(int argc, char \*argv[]) {
+\ printf("%s\\n", "Hello world!");
+\}
+\~~~~~~~~~~~~~~~~~~
+
+becomes
+
+~~~ {.numberLines}
+int main(int argc, char \*argv[]) {
+ printf("%s\\n", "Hello world!");
+}
+~~~~~~~~~~~~~~~~~~
+
+Pandoc attributes (like ".numberlines" etc.) will be ignored
+
+-------------------------------------------------
+
+-> # Supported markdown formatting <-
+