Status of This DocumentThis document provides information to the grid community, proposing the core components for an extensible Simple API for Grid Applications (SAGA Core API). It is supposed to be used as input to the definition of language specific bindings for this API, and by implementors of these bindings. Distribution is unlimited.In 2010/2011, a number of errata have been applied to this document. A complete changelog can be found in the appendix. Note that the API specified in this document version is thus labelled as version 1.1, and as such obsoletes the previous API version 1.0. Most changes should be backward compatible with the original specification (for details see changelog).