=Introduction= This document contains the most important parts of the GF Resource Grammar API. It has been machine-generated from the source files; each chapter gives a link to the relevant source files, which give more information. Some of the files have not yet been prepared so that the machine generated documentation has the right format. The second-last chapter gives instructions on how to "browse" the library by loading the grammars into the ``gf`` command editor. The last chapter contains a brief example of how application grammars can import resource modules. At the same time, it illustrates a "design pattern" for using the resource API to build functor-based applications The current status of resource grammar completion for different languages is shown in [``status.html`` ./status.html].