diff --git a/examples/scholarly_paper/2020-iFM-CSP/paper.thy b/examples/scholarly_paper/2020-iFM-CSP/paper.thy
index 107f87e..e4563d1 100644
--- a/examples/scholarly_paper/2020-iFM-CSP/paper.thy
+++ b/examples/scholarly_paper/2020-iFM-CSP/paper.thy
@@ -996,8 +996,7 @@ restrictions on the structure of components. None of our paradigmatic examples c
 be automatically proven with any of the discussed SMT techniques without restrictions.
 \<close>
 
-section*["conclusion"::conclusion,main_author="Some(@{docitem ''bu''}::author)"]
-\<open>Conclusion\<close>
+section*["conclusion"::conclusion,main_author="Some(@{docitem ''bu''}::author)"]\<open>Conclusion\<close>
 text\<open>We presented a formalisation of the most comprehensive semantic model for \<^csp>, a 'classical' 
 language for the specification and analysis of concurrent systems studied in a rich body of 
 literature. For this purpose, we ported @{cite "tej.ea:corrected:1997"} to a modern version
diff --git a/examples/technical_report/Isabelle_DOF-Manual/04_RefMan.thy b/examples/technical_report/Isabelle_DOF-Manual/04_RefMan.thy
index 4f6b1e0..eada145 100755
--- a/examples/technical_report/Isabelle_DOF-Manual/04_RefMan.thy
+++ b/examples/technical_report/Isabelle_DOF-Manual/04_RefMan.thy
@@ -487,11 +487,13 @@ formal model. For example, assume a definition: \<close>
 
 definition last :: "'a list \<Rightarrow> 'a" where "last S = hd(rev S)"
 
+(* Old stuff using abstract classes.
 (*<*)
 text*[claim::assertions]\<open>For non-empty lists, our definition yields indeed the last element of a list.\<close>
 assert*[claim::assertions] "last[4::int] = 4"
 assert*[claim::assertions] "last[1,2,3,4::int] = 4"
 (*>*)
+*)
 text\<open>We want to check the consequences of this definition and can add the following statements:
 @{boxed_theory_text [display]\<open>
 text*[claim::assertions]\<open>For non-empty lists, our definition yields indeed 
diff --git a/src/DOF/Isa_COL.thy b/src/DOF/Isa_COL.thy
index f70ec09..35f26df 100755
--- a/src/DOF/Isa_COL.thy
+++ b/src/DOF/Isa_COL.thy
@@ -97,10 +97,10 @@ fun transform_cid thy NONE X = X
                                  val sub_cid_long =  DOF_core.read_cid_global thy sub_cid
                              in  if DOF_core.is_subclass_global thy  sub_cid_long cid_long
                                  then (SOME (sub_cid,pos))
-                                 else (SOME (sub_cid,pos)) 
-                                      (*  BUG : check reveals problem of Definition* misuse.  
+                                 else (* (SOME (sub_cid,pos)) *)
+                                      (*  BUG : check reveals problem of Definition* misuse. *)  
                                         error("class "^sub_cid_long^
-                                              " must be sub-class of "^cid_long) *)
+                                              " must be sub-class of "^cid_long) 
                              end  
 in
 
@@ -427,28 +427,4 @@ ML\<open>@{term "side_by_side_figure"};
    DOF_core.SPY;\<close>
 
 
-section\<open>DEPRECATED : An attempt to model Standard Isabelle Formal Content\<close>
-
-doc_class assertions =
-    properties :: "term list"
-  
-doc_class "thms" =
-    properties :: "thm list"
-
-doc_class formal_item = 
-    item :: "(assertions + thms)"
-
-doc_class definitions =
-    requires    :: "formal_item list"
-    establishes :: "thms list"
-
-doc_class formal_content =
-    style :: "string option"
-    accepts "\<lbrace>formal_item\<rbrace>\<^sup>+"
-
-doc_class concept = 
-    tag        :: "string"   <= "''''"
-    properties :: "thm list" <= "[]"
-
-
 end
diff --git a/src/ontologies/CENELEC_50128/CENELEC_50128.thy b/src/ontologies/CENELEC_50128/CENELEC_50128.thy
index 2a5653c..c31eafe 100755
--- a/src/ontologies/CENELEC_50128/CENELEC_50128.thy
+++ b/src/ontologies/CENELEC_50128/CENELEC_50128.thy
@@ -44,6 +44,7 @@ text\<open> Excerpt of the BE EN 50128:2011, page 22. \<close>
 
 section\<open>Terms and Definitions\<close>
 
+typ "sfc"
 Definition*[assessment::sfc,short_name="''assessment''"]
 \<open>process of analysis to determine whether software, which may include 
 process, documentation, system, subsystem hardware and/or software components, meets the specified 
@@ -68,6 +69,7 @@ criteria:
   configuration management system or is a part of a collection of components 
    (e. g. subsystems) which have an independent version
 \<close>
+typ "sfc"
 
 Definition*[CMGR::sfc, short_name="''configuration manager''"]
 \<open>entity that is responsible for implementing and carrying out the processes
diff --git a/src/ontologies/scholarly_paper/scholarly_paper.thy b/src/ontologies/scholarly_paper/scholarly_paper.thy
index 2286221..58e820a 100755
--- a/src/ontologies/scholarly_paper/scholarly_paper.thy
+++ b/src/ontologies/scholarly_paper/scholarly_paper.thy
@@ -257,7 +257,7 @@ val _ =
   Outer_Syntax.command ("Definition*", @{here}) "Textual Definition"
     (attributes -- Parse.opt_target -- Parse.document_source --| semi
       >> (Toplevel.theory o (Onto_Macros.enriched_formal_statement_command
-                                           (SOME "definition") 
+                                           (SOME "math_content") (* should be (SOME "definition") *) 
                                            [("mcc","defn")] 
                                            {markdown = true} )));
 
diff --git a/src/tests/InnerSyntaxAntiquotations.thy b/src/tests/InnerSyntaxAntiquotations.thy
index 271e2ab..164be01 100755
--- a/src/tests/InnerSyntaxAntiquotations.thy
+++ b/src/tests/InnerSyntaxAntiquotations.thy
@@ -14,7 +14,7 @@
 chapter\<open>Term Antiquotations\<close>
 
 text\<open>Terms are represented by "Inner Syntax" parsed by an Earley parser in Isabelle.
-For historical reasons, term antiquotations are called therefore somewhat misleadingly
+For historical reasons, \<^emph>\<open>term antiquotations\<close> are called therefore somewhat misleadingly
 "Inner Syntax Antiquotations". \<close>
 
 theory