diff --git a/LICENSE.md b/LICENSE.md
index a749f99..a480400 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,4 +1,4 @@
-Copyright 2020-2023 Hartmut Seichter
+Copyright 2020-2024 Hartmut Seichter
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
diff --git a/README.md b/README.md
index ec5f847..368648b 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,6 @@ options:
 
 © Copyright 2020-2024 Hartmut Seichter
 
-
 # Licence
 
 Coursebuilder is licensed under the terms of the MIT License. For details consult https://opensource.org/license/mit/ or the attached license file
diff --git a/TODO.md b/TODO.md
index 484edcc..c35be4a 100644
--- a/TODO.md
+++ b/TODO.md
@@ -3,5 +3,7 @@
 * [ ] proper referencing of tables
 * [ ] custom python code in tables
 * [x] fix overlong table cells (pandoc longtable only deals with overlong tables but not cells)
-* [ ] add a book mode for mixing input and headers (# Blah -m mod.cg.yaml)
-* [ ] table generator
+* [x] add a book mode for mixing input and headers (# Blah -m mod.cg.yaml)
+* [~] table generator
+* [ ] overlay of compulsory with other modes ... 
+* [ ] add template based generator
\ No newline at end of file
diff --git a/coursebuilder/__main__.py b/coursebuilder/__main__.py
index 2ce0fc5..996e426 100644
--- a/coursebuilder/__main__.py
+++ b/coursebuilder/__main__.py
@@ -13,207 +13,118 @@ actual values are kept in YAML files in order to version them with git.
 from argparse import ArgumentParser
 import yaml
 import string
-import os
+import os,sys
 
 from tablegenerator import TableGenerator
 from markdowngenerator import MarkdownGenerator
+from templategenerator import TemplateGenerator
+from metagenerator import MetaGenerator
 
 
 class CourseBuilder:
 
-    def __init__(self) -> None:
-        self.__schema = None
-
-    
-    def set_schema(self,schema = None):
-        self.__schema = schema
-
-    def get_template(self,field,lang='de'):
-        if 'template' in self.__schema[field]:
-            return self.__schema[field]['template'][lang]
-        else:
-            return "$value"        
+    @staticmethod
+    def run():
         
-    def is_translatable(self,field):
-        if 'translatable' in self.__schema[field]:
-            return self.__schema[field]['translatable']
-        else:
-            return True        
+        # arguments
+        parser = ArgumentParser(description='versatile curricula generator')
 
-    def needs_spec(self,field):
-        if 'spec' in self.__schema[field]:
-            return self.__schema[field]
-        else:
-            return False
+        parser.add_argument('-m','--meta',action="extend", nargs="+", type=str,help="course description(s) as YAML file(s)")
+        parser.add_argument('-l','--lang',help="Language to parse from meta file (use de or en)",default='de')
+        parser.add_argument('-f','--fields',help="Fields to be used, the table will be build accordingly",action="extend", nargs="+", type=str)
+        parser.add_argument('-s','--schema',help="using provided schema")
+        parser.add_argument('-p','--pagebreak',action="store_true",help="add a pagebreak after each module")
+        parser.add_argument('-t','--title',action="store_true",help="take first value in list as title")
+        parser.add_argument('-b','--book',type=str,help="process a whole curriculum book with sections")
+        parser.add_argument('--level',type=int,default=1,help="level of header tags")
+        parser.add_argument('--table-gen',type=str,default=None,help='runs table generator')
+        parser.add_argument('--template',type=str,default=None,help='defines a template to be used with fields')
         
-    def process_label(self,field,lang='de'):
-        # processes the label of a field item
-        return self.__schema[field]['label'][lang]
+        # get arguments
+        args = parser.parse_args()
+        
+        if args.table_gen:
 
-    def process_str(self,meta,field,lang='de'):
-        if self.is_translatable(field):
-
-            return [self.process_label(field,lang),meta[field][lang]]
-        else:
-            if not 'value' in meta[field]:
-                raise AssertionError(field,'incomplete')
+            tg = TableGenerator()
             
-            return [self.process_label(field,lang),meta[field]['value']]
+            tg.generate_table(args.table_gen)
 
-    def process_enum(self,meta,field,lang='de'):
-        """
-        enum have a specification 'specs' option 
-        that can be forced by the scheme
-        """
-        vv = meta[field]['value']
-        enum_val = self.__schema[field]['values'][vv][lang]
+            return
 
-        if self.needs_spec(field):
 
-            t = string.Template(self.get_template(field=field,lang=lang))
+        # book mode with predefined setting from a book file
+        if args.book and args.schema:
+            
+            generator = MetaGenerator()
 
-            spec = meta[field]['spec'][lang]
+            with open(args.schema) as sf:
+                generator.set_schema(yaml.load(sf,Loader=yaml.Loader))
+
+            with open(args.book) as bf:
+
+                actual_fields = []
+
+                book = yaml.load(bf,Loader=yaml.Loader)
+                book_path = os.path.abspath(args.book)
+
+                for bi in book['book']:
+                    if 'fields' in bi:
+                        actual_fields = bi['fields']
+                    if 'sections' in bi:
+                        for section in bi['sections']:
+                            if 'text' in section:
+                                print(section['text'][args.lang])
+                            if 'modules' in section:
+                                for m in section['modules']: 
+                                    mod_path = os.path.join(os.path.dirname(book_path),m)
+
+                                    with open(mod_path) as fm:
+                                        try:
+
+                                            table_items = generator.process(yaml.load(fm,Loader=yaml.Loader),fields=actual_fields,lang=args.lang,pagebreak=args.pagebreak,createTitle=args.title,header_level=args.level)
+                                            
+                                            MarkdownGenerator.generate(table_items,pagebreak=args.pagebreak,title=args.title,header_level=args.level)
+                                            
+                                        except Exception as exc:
+                                            print(f'{type(exc).__name__} in {mod_path}: {exc}',file=sys.stderr)
+
+
+        # verbose command line mode
+        elif args.schema and args.meta and len(args.fields) > 0:
+            
+            # get actual fields
+            actual_fields = []
+
+            if os.path.isfile(args.fields[0]):
+                with open(args.fields[0]) as ff:
+                    actual_fields = yaml.load(ff,Loader=yaml.Loader)['fields']
+            else:
+                actual_fields = args.fields 
+            
+        
+            # get schema
+            actual_schema = None
+            with open(args.schema) as f:
+                actual_schema = yaml.load(f,Loader=yaml.Loader)
+
+            # iterate through meta files
+            for m in args.meta:
+                with open(m) as fm:
+        
+                    generator = MetaGenerator()
+                    generator.set_schema(actual_schema)
+
+                    table_items = generator.process(yaml.load(fm,Loader=yaml.Loader),fields=actual_fields,lang=args.lang,pagebreak=args.pagebreak,createTitle=args.title,header_level=args.level,template=args.template)
+
+                    if args.template:
+                        TemplateGenerator.generate(table_items)
+                    else:
+                        MarkdownGenerator.generate(table_items,pagebreak=args.pagebreak,title=args.title,header_level=args.level)
+
+                    # print(table_items)
 
-            return [self.process_label(field,lang),t.substitute({'value': enum_val,'spec': spec})]
         else:
-            return [self.process_label(field,lang),enum_val]
-
-    def process_num(self,meta,field,lang='de'):
-        v = meta[field]['value']
-        t = string.Template(self.get_template(field,lang))
-        return [self.process_label(field,lang),t.substitute({'value' : v})]
-    
-    def process_multinum(self,meta,field,lang='de'):
-        v = meta[field]['value']
-        t = string.Template(self.get_template(field,lang))
-        if hasattr(v, "__len__"):
-            vv = [t.substitute({'value' : ev}) for ev in v]
-            return [self.process_label(field,lang),', '.join(vv)]
-        else:
-            return self.process_num(meta=meta,field=field,lang=lang)
-    
-    
-    def process_multikey(self,meta,field,lang='de'):
-        """
-        multikey need to assign a numeric value to a key
-        """
-        vs = meta[field]['value']
-        t = string.Template(self.get_template(field,lang))
-
-        k = self.process_label(field,lang)
-
-        parts = []
-
-        for e in vs:
-            kk = self.__schema[field]['keys'][e][lang]
-            parts.append(t.substitute({'key': kk, 'value' : vs[e]}))
-
-        return [k,', '.join(parts)]
-
-
-    def process(self,meta,fields = [],lang = 'de',pagebreak = False,createTitle=False,header_level=1):
-
-        table_items = []
-
-        for field in fields:
-            match self.__schema[field]['type']: 
-                case 'str': table_items.append(self.process_str(meta,field,lang)) 
-                case 'enum': table_items.append(self.process_enum(meta,field,lang))
-                case 'int' | 'num' : table_items.append(self.process_num(meta,field,lang))
-                case 'multinum' : table_items.append(self.process_multinum(meta,field,lang))
-                case 'multikey': table_items.append(self.process_multikey(meta,field,lang))
-
-        mdg = MarkdownGenerator()
-        mdg.generate_markdown(table_items,pagebreak,createTitle,header_level=header_level)
-
-    def process_book_section(self,section,lang='de'):
-        pass
-
-    def process_book(self,book,bookpath,create_title,pagebreak,lang='de',header_level=2):
-
-        actual_fields = []
-
-        for bi in book['book']:
-            if 'fields' in bi:
-                actual_fields = bi['fields']
-            if 'sections' in bi:
-                for section in bi['sections']:
-                    if 'text' in section:
-                        print(section['text'][lang])
-                    if 'modules' in section:
-                        for m in section['modules']: 
-                            mod_path = os.path.join(os.path.dirname(bookpath),m)
-
-                            with open(mod_path) as fm:
-                                self.process(yaml.load(fm,Loader=yaml.Loader),fields=actual_fields,lang=lang,pagebreak=pagebreak,createTitle=create_title,header_level=header_level)
-
-
-
-
-
-def main():
-    
-    # arguments
-    parser = ArgumentParser(description='versatile curricula generator')
-
-    parser.add_argument('-m','--meta',action="extend", nargs="+", type=str,help="course description(s) as YAML file(s)")
-    parser.add_argument('-l','--lang',help="Language to parse from meta file (use de or en)",default='de')
-    parser.add_argument('-f','--fields',help="Fields to be used, the table will be build accordingly",action="extend", nargs="+", type=str)
-    parser.add_argument('-s','--schema',help="using provided schema")
-    parser.add_argument('-p','--pagebreak',action="store_true",help="add a pagebreak after each module")
-    parser.add_argument('-t','--title',action="store_true",help="take first value in list as title")
-    parser.add_argument('-b','--book',type=str,help="process a whole curriculum book with sections")
-    parser.add_argument('--level',type=int,default=1,help="level of header tags")
-    parser.add_argument('--table-gen',type=str,default=None,help='runs table generator')
-    
-    
-    # get arguments
-    args = parser.parse_args()
-    
-    if args.table_gen:
-
-        tg = TableGenerator()
-        
-        tg.generate_table(args.table_gen)
-
-        return
-
-
-
-    # book mode with predefined setting from a book file
-    if args.book and args.schema:
-        
-        cb = CourseBuilder()
-
-        with open(args.schema) as sf:
-            cb.set_schema(yaml.load(sf,Loader=yaml.Loader))
-
-        with open(args.book) as bf:
-            cb.process_book(yaml.load(bf,Loader=yaml.Loader),os.path.abspath(args.book),lang=args.lang,pagebreak=args.pagebreak,create_title=args.title,header_level=args.level)
-
-
-    # verbose command line mode
-    elif args.schema and args.meta and len(args.fields) > 0:
-        
-        cb = CourseBuilder()
-
-        actual_fields = []
-
-        if os.path.isfile(args.fields[0]):
-            with open(args.fields[0]) as ff:
-                actual_fields = yaml.load(ff,Loader=yaml.Loader)['fields']
-        else:
-            actual_fields = args.fields 
-        
-
-        with open(args.schema) as f:
-            cb.set_schema(yaml.load(f,Loader=yaml.Loader))
-
-        for m in args.meta:
-            with open(m) as fm:
-                cb.process(yaml.load(fm,Loader=yaml.Loader),fields=actual_fields,lang=args.lang,pagebreak=args.pagebreak,createTitle=args.title,header_level=args.level)
-    else:
-        parser.print_help()
+            parser.print_help()
 
 if __name__ == '__main__':
-    main()
+    CourseBuilder.run()
diff --git a/coursebuilder/markdowngenerator.py b/coursebuilder/markdowngenerator.py
index f7ff98a..59f4323 100644
--- a/coursebuilder/markdowngenerator.py
+++ b/coursebuilder/markdowngenerator.py
@@ -2,13 +2,21 @@
 
 import textwrap,itertools
 
+# we need raw value maybe add a third item - tuple the input?
+
+# alternative use a dictionary
+# { name: XYZ }
+
+# or make it the class
 
 class MarkdownGenerator:
-    def __init__(self) -> None:
-        pass
 
+    @staticmethod
+    def generate_tablerow() -> str:
+        pass
     
-    def generate_markdown(self,ti,pagebreak = False,title = False,header_level = 1) -> str:
+    @staticmethod
+    def generate(ti,pagebreak = False,title = False,header_level = 1) -> str:
 
         line_length = 128
         column_ratio= 0.28
@@ -16,6 +24,9 @@ class MarkdownGenerator:
         h_len = int(line_length * column_ratio)
         d_len = line_length-h_len
 
+        #
+        #  generate title (currently the first one)
+        # 
         if title:
             print('#' * header_level,ti[0][1],'\n')
 
@@ -27,8 +38,11 @@ class MarkdownGenerator:
         # this implements a Markdown Grid-Table
         #
 
+        # test if this affected by a third item!
+
         for k,v in ti:
 
+            # 
             if v == None:
                 v = ''
 
diff --git a/coursebuilder/metagenerator.py b/coursebuilder/metagenerator.py
new file mode 100644
index 0000000..fe70f33
--- /dev/null
+++ b/coursebuilder/metagenerator.py
@@ -0,0 +1,155 @@
+import os,string,sys
+import yaml
+
+class MetaGenerator:
+
+    def __init__(self) -> None:
+        self.__schema = None
+
+    def set_schema(self,schema = None):
+        self.__schema = schema
+
+    def get_template(self,field,lang='de'):
+        if 'template' in self.__schema[field]:
+            return self.__schema[field]['template'][lang]
+        else:
+            return "$value"        
+        
+    def is_translatable(self,field):
+        if 'translatable' in self.__schema[field]:
+            return self.__schema[field]['translatable']
+        else:
+            return True        
+
+    def needs_spec(self,field):
+        if 'spec' in self.__schema[field]:
+            return self.__schema[field]
+        else:
+            return False
+        
+    def process_label(self,field,lang='de'):
+        # processes the label of a field item
+        return self.__schema[field]['label'][lang]
+
+    def process_str(self,meta,field,lang='de'):
+        if self.is_translatable(field):
+
+            return [self.process_label(field,lang),meta[field][lang]]
+        else:
+            if not 'value' in meta[field]:
+                raise AssertionError(field,'incomplete')
+            
+            return [self.process_label(field,lang),meta[field]['value']]
+
+    def process_enum(self,meta,field,lang='de'):
+        """
+        enum have a specification 'specs' option 
+        that can be forced by the scheme
+        """
+        vv = meta[field]['value']
+        enum_val = self.__schema[field]['values'][vv][lang]
+
+        if self.needs_spec(field):
+
+            t = string.Template(self.get_template(field=field,lang=lang))
+
+            spec = meta[field]['spec'][lang]
+
+            return [self.process_label(field,lang),t.substitute({'value': enum_val,'spec': spec})]
+        else:
+            return [self.process_label(field,lang),enum_val]
+
+    def process_num(self,meta,field,lang='de'):
+        v = meta[field]['value']
+        t = string.Template(self.get_template(field,lang))
+        return [self.process_label(field,lang),t.substitute({'value' : v})]
+    
+    def process_multinum(self,meta,field,lang='de'):
+        v = meta[field]['value']
+        t = string.Template(self.get_template(field,lang))
+        if hasattr(v, "__len__"):
+            vv = [t.substitute({'value' : ev}) for ev in v]
+            return [self.process_label(field,lang),', '.join(vv)]
+        else:
+            return self.process_num(meta=meta,field=field,lang=lang)
+    
+    
+    def process_multikey(self,meta,field,lang='de'):
+        """
+        multikey need to assign a numeric value to a key
+        """
+        vs = meta[field]['value']
+        t = string.Template(self.get_template(field,lang))
+
+        k = self.process_label(field,lang)
+
+        parts = []
+
+        for e in vs:
+            kk = self.__schema[field]['keys'][e][lang]
+            parts.append(t.substitute({'key': kk, 'value' : vs[e]}))
+
+        return [k,', '.join(parts)]
+
+
+    def process(self,meta,fields = [],lang = 'de',pagebreak = False,createTitle=False,header_level=1,template=None):
+
+        table_items = []
+
+        # iterate over requested fields
+        for field in fields:
+            try:
+                # correlate with schema and append
+                match self.__schema[field]['type']: 
+                    case 'str': table_items.append(self.process_str(meta,field,lang)) 
+                    case 'enum': table_items.append(self.process_enum(meta,field,lang))
+                    case 'int' | 'num' : table_items.append(self.process_num(meta,field,lang))
+                    case 'multinum' : table_items.append(self.process_multinum(meta,field,lang))
+                    case 'multikey': table_items.append(self.process_multikey(meta,field,lang))
+            except Exception as exp:
+                print(field,' not resolvable in ',self.__schema,exp)
+
+        # maybe return tableitems as np.Dataframe?
+        return table_items
+
+    
+
+        # if template != None:
+        #     # use template generator
+        #     TemplateGenerator.generate(table_items,pagebreak,createTitle,header_level=header_level)
+        #     pass
+        # else:
+        #     # conventional MD mode
+        #     MarkdownGenerator.generate(table_items,pagebreak,createTitle,header_level=header_level)
+
+    # def process_book_section(self,section,lang='de'):
+    #     pass
+
+    # book mode
+    # def process_book(self,book,bookpath,create_title,pagebreak,lang='de',header_level=2):
+
+    #     actual_fields = []
+
+    #     for bi in book['book']:
+    #         if 'fields' in bi:
+    #             actual_fields = bi['fields']
+    #         if 'sections' in bi:
+    #             for section in bi['sections']:
+    #                 if 'text' in section:
+    #                     print(section['text'][lang])
+    #                 if 'modules' in section:
+    #                     for m in section['modules']: 
+    #                         mod_path = os.path.join(os.path.dirname(bookpath),m)
+
+    #                         with open(mod_path) as fm:
+    #                             try:
+    #                                 table_items = self.process(yaml.load(fm,Loader=yaml.Loader),fields=actual_fields,lang=lang,pagebreak=pagebreak,createTitle=create_title,header_level=header_level)
+
+    #                                 print(table_items)
+                                    
+    #                             except Exception as exc:
+    #                                 print(f'{type(exc).__name__} in {mod_path}: {exc}',file=sys.stderr)
+
+
+
+
diff --git a/coursebuilder/tablegenerator.py b/coursebuilder/tablegenerator.py
index 3bdc6f5..40b8afd 100644
--- a/coursebuilder/tablegenerator.py
+++ b/coursebuilder/tablegenerator.py
@@ -7,7 +7,7 @@ import os
 
 class TableGenerator:
     """
-    Really hacky method to create latex > dvi > SVG to create images to include 
+    Really hacky method to create latex > dvi > SVG to create images to include
     """
 
     def __init__(self) -> None:
@@ -22,7 +22,7 @@ class TableGenerator:
 
         for token in data.split(','):
 
-            t = tuple(token.split(':')[:2])      
+            t = tuple(token.split(':')[:2])
             row = [t[0]]
             for k in list(self.__cols_map[lang].keys())[1:]:
                 if k in t[1]:
@@ -33,10 +33,10 @@ class TableGenerator:
             rows.append(' & '.join(row) + '\\\\')
 
         self.run_template(rows=rows)
-            
 
-    def run_template(self,rows = [],lang = 'de'):
-        
+
+    def run_template(self,rows = [],lang = 'de') -> None:
+
         t = string.Template(self.get_latex_template())
 
         with tempfile.NamedTemporaryFile('w',delete=False,prefix='cb-') as fp:
@@ -45,7 +45,7 @@ class TableGenerator:
             subprocess.run(["latex",fp.name])
             subprocess.run(["dvisvgm",os.path.basename(fp.name) + '.dvi'])
             # subprocess.run(["mv",os.path.basename(fp.name) + '.svg','.'])
-            
+
 
 
     def get_latex_template(self,lang = 'de') -> str:
@@ -63,7 +63,7 @@ class TableGenerator:
                 r'\begin{table}[ht]' +
                 '\\begin{{tabular}} {{ {0} }}'.format(' '.join(layout)) +
                 r'\hline'
-                r' ${th}' 
+                r' ${th}'
                 r'\hline'
                 r' ${td}' +
                 r'\hline'
@@ -71,7 +71,7 @@ class TableGenerator:
                 r'\end{table}'
                 r'\end{document}')
 
-                
+
 #
 # Kompetenz & Kennen & Wertung \\
 
@@ -79,4 +79,4 @@ class TableGenerator:
 # 2 & Latex & ++ \\
 # 3 & Writer & +- \\
 #
-# latex image.tex;dvisvgm image.dvi
\ No newline at end of file
+# latex image.tex;dvisvgm image.dvi
diff --git a/coursebuilder/templategenerator.py b/coursebuilder/templategenerator.py
new file mode 100644
index 0000000..0e7a23a
--- /dev/null
+++ b/coursebuilder/templategenerator.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+import textwrap,itertools
+
+
+class TemplateGenerator:
+
+    @staticmethod
+    def generate(ti,pagebreak = False,title = False,header_level = 1) -> str:
+        print(ti)
+        pass
\ No newline at end of file
diff --git a/test/simple/Makefile b/test/simple/Makefile
index 8ea5c11..76e1d83 100644
--- a/test/simple/Makefile
+++ b/test/simple/Makefile
@@ -1,17 +1,30 @@
+
+coursebuilder := ../../coursebuilder
+
 table.en.pdf:
 	@echo "creating English version ..."
-	python ../../coursebuilder -s schema.yaml -m mod.cg.yaml -l en -f fields.yaml | pandoc --template pandoc-template/eisvogel.latex -o table.en.pdf
+	python ${coursebuilder} -s schema.yaml -m mod.cg.yaml -l en -f fields.yaml | pandoc --template pandoc-template/eisvogel.latex -o table.en.pdf
 
 table.de.pdf:
 	@echo "creating German version ..."
-	python ../../coursebuilder -s schema.yaml -m mod.cg.yaml -l de -f fields.yaml | pandoc --template pandoc-template/eisvogel.latex -o table.de.pdf
+	python ${coursebuilder} -s schema.yaml -m mod.cg.yaml -l de -f fields.yaml | pandoc --template pandoc-template/eisvogel.latex -o table.de.pdf
 
 all: table.en.pdf table.de.pdf
 
-clean: 
+clean:
 	rm -f table.en.pdf table.de.pdf
 
+debug-template:
+	python ${coursebuilder} -s schema.yaml -m mod.cg.yaml mod.interactsys.yaml -l de -f name credits --template "$$name | $$credits"
+
+debug-markdown:
+	python ${coursebuilder} -s schema.yaml -m mod.cg.yaml mod.interactsys.yaml -l de -f name credits
+
+debug-book:
+	python ${coursebuilder} -s schema.yaml -b book.yaml -l de
 
 debug:
-	python ../../coursebuilder -s schema.yaml -m mod.cg.yaml -l de -f fields.yaml
+	python ${coursebuilder} -s schema.yaml -m mod.cg.yaml -l de -f fields.yaml
 
+table:
+	python ${coursebuilder} -s schema.yaml -b book.yaml -l de -f fields.yaml
diff --git a/test/simple/book.yaml b/test/simple/book.yaml
index 6cd1b46..5ec66d5 100644
--- a/test/simple/book.yaml
+++ b/test/simple/book.yaml
@@ -11,7 +11,7 @@ book:
     - content
     - form-of-instruction 
     - prerequisites 
-    - media-of-instruction 
+    - teaching-material 
     - author-of-indenture 
     - used-in 
     - workload 
@@ -28,4 +28,10 @@ book:
         en: "## compulsory courses {.unnumbered}"
     - modules: 
         - mod.cg.yaml
+    - text:
+        de: "## Wahlbereich {.unnumbered}"
+        en: "## elective courses {.unnumbered}"
+    - modules: 
+        - mod.interactsys.yaml
+
 
diff --git a/test/simple/fields.yaml b/test/simple/fields.yaml
index 92a0a08..bede013 100644
--- a/test/simple/fields.yaml
+++ b/test/simple/fields.yaml
@@ -5,7 +5,7 @@ fields:
   - content
   - form-of-instruction 
   - prerequisites 
-  - media-of-instruction 
+  - teaching-material 
   - author-of-indenture 
   - used-in 
   - workload 
diff --git a/test/simple/mod.cg.yaml b/test/simple/mod.cg.yaml
index 55d76c4..e5b4201 100644
--- a/test/simple/mod.cg.yaml
+++ b/test/simple/mod.cg.yaml
@@ -74,7 +74,7 @@ content:
      * Overview visualizations 
      * Graphical User Interfaces
 
-media-of-instruction:
+teaching-material:
   de: |
    * H5P Lernmodule 
     * Lernforum
diff --git a/test/simple/mod.interactsys.yaml b/test/simple/mod.interactsys.yaml
index d8efd55..c20086e 100644
--- a/test/simple/mod.interactsys.yaml
+++ b/test/simple/mod.interactsys.yaml
@@ -61,7 +61,7 @@ content:
     * evaluation methods of interactive systems
     * statistical methods for UX design
 
-media-of-instruction:
+teaching-material:
   de: |
       H5P Lernmodule, Lernforum und Übungen am PC
       
@@ -101,6 +101,9 @@ workload:
 
 form-of-exam:
   value: alternative
+  spec:
+    de:
+    en:
 
 frequency:
   value: once_per_year
diff --git a/test/simple/schema.yaml b/test/simple/schema.yaml
index 9a46893..8d54fab 100644
--- a/test/simple/schema.yaml
+++ b/test/simple/schema.yaml
@@ -142,7 +142,7 @@ prerequisites:
 # 
 # Wie können die Studierenden sich auf die Teilnahme an diesem Modul vorbereiten?
 # 
-media-of-instruction:     
+teaching-material:     
     type: str
     label: {
         de: "Literatur und multimediale Lehr- und Lernprogramme",