-<!ENTITY tbx-err SYSTEM "sgml/tbx_err.sgml">
-<!ENTITY tbx-log SYSTEM "sgml/tbx_log.sgml">
-<!ENTITY tbx-dynar SYSTEM "sgml/tbx_dynar.sgml">
-<!ENTITY tbx-dico SYSTEM "sgml/tbx_dico.sgml">
-<!ENTITY tbx-set SYSTEM "sgml/tbx_set.sgml">
-<!ENTITY tbx-cfg SYSTEM "sgml/tbx_cfg.sgml">
+<!ENTITY xbt-error SYSTEM "xml/xbt_error.xml">
+<!ENTITY xbt-log SYSTEM "xml/xbt_log.xml">
+<!ENTITY xbt-dynar SYSTEM "xml/xbt_dynar.xml">
+<!ENTITY xbt-dict SYSTEM "xml/xbt_dict.xml">
+<!ENTITY xbt-set SYSTEM "xml/xbt_set.xml">
+<!ENTITY xbt-swag SYSTEM "xml/xbt_swag.xml">
+<!ENTITY xbt-heap SYSTEM "xml/xbt_heap.xml">
+<!ENTITY xbt-config SYSTEM "xml/xbt_config.xml">