--- /dev/null
+This directory contains C header files containing machine-specific
+definitions. Each file describes a particular machine. The emacs
+configuration script edits ../config.h to include the appropriate one of
+these files, and then each emacs source file includes config.h.
+
+template.h is a generic template for machine descriptions; it
+describes the parameters a machine file can specify.
+
+
+General XEmacs Changes
+----------------------
+1. Removed all code dealing with VALBITS and XSET*. These are handled
+ differently in XEmacs.
+
+2. Removed all defines of WORDS_BIGENDIAN. Now determined by configure.
+
+3. Put #ifndef PURESIZE around all PURESIZE defines so that it can be
+ overridden at configure time.
+
+4. Removed all defines of NO_ARG_ARRAY. The arg-array hack is not
+ done in XEmacs. (If you want to put it back, use configure --
+ autoconf has a check for this.)
+
+5. Removed all defines of BITS_PER_INT, BITS_PER_LONG -- now
+ determined by configure.
+
+See ../s/README for a list of other changes made to the FSF 19.30
+configuration files for XEmacs.