The subject disclosure pertains to computer programming languages and translation or conversion thereof. Rather than a complicated semantics preserving translation or conversion from a first source language to a second target language, the conversion can be one of syntax. The conversion can be accomplished, for example, via employment of a map that defines the relation between the syntax of the first language and the second language. The semantics of at least a part of the first language can be defined by the second target language. Thus, the first language can be open-ended and/or semantically extensible based on the second language.