A lot of information is available for potential DSL developers. For further reading, see the annotated DSL bibliography. For more information and real-world examples, check out the Domain-Specific Modeling Forum. May your languages forever be an affirmation of the harmony between thought and reality!
Logix: logix.livelogix.com/index.html [1]
Camlp4: caml.inria.fr/camlp4 [2]
DSM Forum: www.dsmforum.org [3]
DSL Bibliography: homepages.cwi.nl/~arie/papers/dslbib [4]
Links:
[1] http://logix.livelogix.com/index.html
[2] http://caml.inria.fr/camlp4
[3] http://www.dsmforum.org
[4] http://homepages.cwi.nl/~arie/papers/dslbib