Index: openacs-4/packages/xotcl-core/tcl/03-doc-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/03-doc-procs.tcl,v
diff -u -r1.22.2.12 -r1.22.2.13
--- openacs-4/packages/xotcl-core/tcl/03-doc-procs.tcl	15 Mar 2022 12:01:53 -0000	1.22.2.12
+++ openacs-4/packages/xotcl-core/tcl/03-doc-procs.tcl	12 Apr 2022 09:36:39 -0000	1.22.2.13
@@ -11,17 +11,6 @@
   @cvs-id $Id$
 }
 
-# Per default, the content of the ::xotcl:: namespace is not serialized;
-# so we add the specified methods explizitely to the export list
-::Serializer exportMethods {
-  ::xotcl::Object instproc ad_proc
-  ::xotcl::Object instproc ad_forward
-  ::xotcl::Class  instproc ad_instproc
-  ::xotcl::Class  instproc ad_instforward
-  ::xotcl::Object instproc ad_doc
-  ::nx::Class method init
-}
-
 ::nx::Object create ::xo::api {
 
   array set :methodLabel {
@@ -596,6 +585,24 @@
   }
 }
 
+# ---------------------------------------------------------------------
+#
+# Per default, the content of the "::xotcl" and "::nx" namespace is
+# not serialized; so when extending the base classes of the object
+# system, one has to these methods explizitely to the export list for
+# the serializer.
+#
+# The following extensions of the base classes are defined here:
+# 
+::Serializer exportMethods {
+  ::nx::Class instproc init
+  ::xotcl::Object instproc ad_proc
+  ::xotcl::Object instproc ad_forward
+  ::xotcl::Class  instproc ad_instproc
+  ::xotcl::Class  instproc ad_instforward
+  ::xotcl::Object instproc ad_doc
+}
+
 ::nx::Class method init {} {
   set r [next]
   #
Index: openacs-4/packages/xotcl-core/tcl/06-param-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/06-param-procs.tcl,v
diff -u -r1.24.2.18 -r1.24.2.19
--- openacs-4/packages/xotcl-core/tcl/06-param-procs.tcl	26 Dec 2021 06:24:05 -0000	1.24.2.18
+++ openacs-4/packages/xotcl-core/tcl/06-param-procs.tcl	12 Apr 2022 09:36:39 -0000	1.24.2.19
@@ -1,3 +1,14 @@
+::xo::library doc {
+
+  xotcl-core implementation for OpenACS package parameters.
+  
+  This functionality was backported to acs-tcl in OpenACS 5.10. The
+  functions here are just for backward compatibility, in case these
+  functions were called directly.
+
+  @author Gustaf Neumann (neumann@wu-wien.ac.at)
+}
+
 # Motivations:
 #
 #  - Huge number of parameter_values in larger dotlrn installations
Index: openacs-4/packages/xotcl-core/tcl/50-protocol-handler-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/50-protocol-handler-procs.tcl,v
diff -u -r1.30.2.6 -r1.30.2.7
--- openacs-4/packages/xotcl-core/tcl/50-protocol-handler-procs.tcl	26 Feb 2021 19:15:52 -0000	1.30.2.6
+++ openacs-4/packages/xotcl-core/tcl/50-protocol-handler-procs.tcl	12 Apr 2022 09:36:39 -0000	1.30.2.7
@@ -1,3 +1,11 @@
+::xo::library doc {
+
+  Protocol handles, mostly for defining extra HTTP methods.
+
+  @author Gustaf Neumann (neumann@wu-wien.ac.at)
+}
+
+
 namespace eval ::xo {
   Class create ProtocolHandler -parameter {
     {url}
Index: openacs-4/packages/xotcl-core/tcl/html-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/html-procs.tcl,v
diff -u -r1.4.2.2 -r1.4.2.3
--- openacs-4/packages/xotcl-core/tcl/html-procs.tcl	31 Jan 2020 18:04:45 -0000	1.4.2.2
+++ openacs-4/packages/xotcl-core/tcl/html-procs.tcl	12 Apr 2022 09:36:39 -0000	1.4.2.3
@@ -1,3 +1,10 @@
+::xo::library doc {
+
+  Tdom support functions. Just to make Tdom createNodeCmds available.
+
+  @author Gustaf Neumann (neumann@wu-wien.ac.at)
+}
+
 package require tdom
 
 ad_proc -public -deprecated require_html_procs {} {
Index: openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl,v
diff -u -r1.6.2.4 -r1.6.2.5
--- openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl	6 Dec 2020 08:37:05 -0000	1.6.2.4
+++ openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl	12 Apr 2022 09:36:39 -0000	1.6.2.5
@@ -1,3 +1,10 @@
+::xo::library doc {
+
+  Callback proc for operations before and after installs.
+
+  @author Gustaf Neumann (neumann@wu-wien.ac.at)
+}
+
 namespace eval ::xotcl-core {
 
   ad_proc -private ::xotcl-core::before-install {} {