diff --git a/docs/development/03designprocess.md b/docs/development/03designprocess.md
index 21f668d3695e3de9680af4943b51139db7c38675..72617d48b3bfb03159ebef108276b81976fbadb4 100644
--- a/docs/development/03designprocess.md
+++ b/docs/development/03designprocess.md
@@ -6,10 +6,12 @@
 
 The research is focused on the funeral traditons in **Europe** and **the U.S**.
 
-### **FROM 16TH CENTURY TO EARLY 20TH CENTURY**
+### **FROM 14TH CENTURY TO LATE 17TH CENTURY**
 
 #### **WINDING SHEET**
 
+### **FROM LATE 17 CENTURY TO EARLY 2OTH CENTURY**
+
 #### **SHROUDS**
 
 ### **EARLY 20TH CENTURY**