* Changes to the C interface
+** SCM_CELL_WORD_LOC has been deprecated.
+
+Use the new macro SCM_CELL_OBJECT_LOC instead, which return a pointer
+to a SCM, as opposed to a pointer to a scm_t_bits.
+
+This was done to allow the correct use of pointers into the Scheme
+heap. Previously, the heap words were of type scm_t_bits and local
+variables and function arguments were of type SCM, making it
+non-standards-conformant to have a pointer that can point to both.
+
** New macros SCM_SMOB_DATA_2, SM_SMOB_DATA_3, etc.
These macros should be used instead of SCM_CELL_WORD_2/3 to access the
+2004-05-06 Marius Vollmer <marius.vollmer@uni-dortmund.de>
+
+ * scheme-smobs.texi: Updated for new SCM_SMOB_* macros.
+
+ * preface.texi: Moved around the sections so that the manual
+ overview comes first.
+
+ * libguile-smobs.texi: Updated for the new role of scm_t_bits.
+
2004-04-21 Marius Vollmer <marius.vollmer@uni-dortmund.de>
* Big reorganization of the whole manual to give it a simpler