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. You can see a snapshot of the new Guile reference manual by checking out the `guile-doc' CVS module. 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. The file `data-rep.texi', which used to be in this directory, is now integrated into the Guile reference manual: the integrated version of this essay is the `Data Representation' chapter. (This chapter 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.) To update the Texinfo source for this essay - for example, when the smob interface changes - please update the file `guile-doc/ref/data-rep.texi' in the guile-doc module.