diff --git a/doc/bird.sgml b/doc/bird.sgml
index 416dfc0a..495d4bd5 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1,4 +1,4 @@
-<!doctype linuxdoc system>
+<!doctype birddoc system>
 
 <!--
 	BIRD documentation
diff --git a/doc/sbase/dtd/linuxdoc.dtd b/doc/sbase/dtd/birddoc.dtd
similarity index 98%
rename from doc/sbase/dtd/linuxdoc.dtd
rename to doc/sbase/dtd/birddoc.dtd
index 7a7bc73a..dee74ee5 100644
--- a/doc/sbase/dtd/linuxdoc.dtd
+++ b/doc/sbase/dtd/birddoc.dtd
@@ -12,7 +12,12 @@ anywhere else. <pavel@ucw.cz>
      Tom Gordon.
 
      $Log$
-     Revision 1.1  2000-05-11 12:00:36  pavel
+     Revision 1.1  2000-05-29 12:05:21  mj
+     Renamed the DTD from linuxdoc to birddoc.
+
+     Pavel, please check whether it builds in your environment as well.
+
+     Revision 1.1  2000/05/11 12:00:36  pavel
      Critical files from linuxdoc1 distribution checked in.
 
      Revision 1.8  1998/06/26 19:41:11  cg
@@ -101,7 +106,7 @@ anywhere else. <pavel@ucw.cz>
 <!entity % sectpar 
         " %par; | figure | tabular | table | %mathpar; | 
 	  %thrm; | %litprog; ">
-<!element linuxdoc o o 
+<!element birddoc o o 
         (sect | chapt | article | report | 
 	 book | letter | telefax | slides | notes | manpage ) >
 
@@ -446,7 +451,7 @@ anywhere else. <pavel@ucw.cz>
       "}" rcub
       "|" verbar>
 
-<!usemap global linuxdoc>
+<!usemap global birddoc>
 <!element label - o empty>
 <!attlist label id cdata #required>
 
@@ -557,7 +562,7 @@ anywhere else. <pavel@ucw.cz>
 
 <!element biblio - o empty>
 <!attlist biblio
-	style cdata "linuxdoc"
+	style cdata "birddoc"
         files cdata "">
 <!element slides - - (slide*) >
 
diff --git a/doc/sbase/dtd/catalog b/doc/sbase/dtd/catalog
new file mode 100644
index 00000000..f51119c7
--- /dev/null
+++ b/doc/sbase/dtd/catalog
@@ -0,0 +1,74 @@
+-- This is a DTD, but will be read as -*- sgml -*-   --
+-- ================================================= --
+-- $Id$ 
+
+   This is dtd/catalog for SGML-Tools.
+
+   Initial revision June 23st, 1997, by B. Kreimeier
+
+   $Log$
+   Revision 1.1  2000-05-29 12:05:22  mj
+   Renamed the DTD from linuxdoc to birddoc.
+
+   Pavel, please check whether it builds in your environment as well.
+
+   Revision 1.7  1998/10/13 12:12:09  cg
+   * Clean up catalog file. (CdG)
+
+   Revision 1.6  1998/03/09 21:10:14  cg
+   * Removed sgmltool.dtd. (CdG)
+
+   Revision 1.5  1998/01/08 19:59:54  cg
+   * Add empty line, it gave problems. (CdG)
+
+   Revision 1.4  1997/12/09 20:56:15  cg
+   * Added html32.dtd (with a modified reference to ISOent) and updated
+     catalog accordingly. You can now do sgmlcheck on HTML files. (CdG)
+
+   Revision 1.3  1997/07/09 13:27:12  cg
+   * Completely new DTD setup by Bernd (BK).
+
+
+                                                       --
+-- ================================================= --
+-- Revision Comments                                 --
+
+-- BK/97/06/23: added a header, changed for 0.99.12  --
+-- ================================================= --
+
+DOCTYPE "BIRDDOC"    "birddoc.dtd"
+
+-- Linuxdoc96.dtd, frozen orignal Linuxdoc DTD --
+DOCTYPE "LINUXDOC"    "linuxdoc.dtd"
+PUBLIC "-//LinuxDoc//DTD LinuxDoc 96//EN" linuxdoc96.dtd
+
+-- Linuxdoc97 Strict DTD --
+PUBLIC "-//LinuxDoc//DTD LinuxDoc 97//EN" linuxdoc97.dtd
+
+-- outdated and shared entities --
+ENTITY %common            "common"
+ENTITY %isoent            "isoent"
+
+ENTITY %deprec96          "deprec96"
+
+
+-- for development and debug, internal use only --
+DOCTYPE "QWERTZ"      "qwertz.dtd"
+DOCTYPE "TEST"        "test.dtd"
+
+-- for SGML validation --
+DOCTYPE "HTML"        "html32.dtd"
+PUBLIC "-//W3C//DTD HTML 3.2 Final//EN" html32.dtd
+
+-- obsolete --
+ENTITY %general           "general"
+
+
+-- ================================================= --
+-- end of dtd/catalog                                --
+--
+   Local Variables:
+   mode: sgml
+   End:                                              --
+-- ================================================= --
+