diff --git a/tools/export-all-parts.py b/tools/export-all-parts.py
index c819107..93b47b3 100644
--- a/tools/export-all-parts.py
+++ b/tools/export-all-parts.py
@@ -24,7 +24,7 @@ def convert_file(file_name, output_format):
 		if len(obj.Parents) == 0:
 			#print(obj.Label)
 			root_objects.append(obj)
-			if obj.Label == doc.Name:
+			if obj.Label == doc.Name or obj.Label == doc.Name + ' (experimental)':
 				main_object = obj
 	
 	if main_object is None and len(root_objects) == 1:
@@ -33,6 +33,11 @@ def convert_file(file_name, output_format):
 	if main_object is None:
 		raise Exception("Can't find main object in file " + file_name + " (found " + str(len(root_objects)) + " root object(s), none named like the document " + doc.Name + ")")
 		
+	if 'experimental' in main_object.Label or 'expérimental' in main_object.Label:
+		print('Document ' + doc.Name + ' is marked as experimental and will be ignored')
+		close_all_docs()
+		return
+		
 	secondary_objects = []
 	code_obj = doc.getObjectsByLabel('Code_Tube_Draft')
 	if len(code_obj) == 1: