Revision 344415669 of "HQ9+" on enwiki

HQ9+ is an esoteric programming langauge using the four commands: H, Q, 9 and +. 
{| class="wikitable"
|-
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| H
| Prints "Hello World" to stdout.
|-
| Q
| Prints the programs source to stdout. (makes it a Quine)
|-
| 9
| Prints the lyrics to the song "99 bottles on a wall" to stdout.
|-
| +
| Increments the accumulator, which can not be accessed.
|}
See [http://esolangs.org/wiki/HQ9 this] for more info.