This directory contains documentation on the Guile core. At the moment, we don't have a full manual on Guile; that's at the head of our task list. The file `data-rep.texi' is an essay on how to write C code that uses Guile values. If you're interested in writing a application which is extensible via Guile, this is a good place to start. Make builds the `info' manual by default, designed to be read on-line; if you want to print it out, go to the `doc' subdirectory of the tree you're building in, and run `make data-rep.ps'. The file `oldfmt.c' contains a function which can be used by application writers to support both old-style and new-style error format strings.