3. Product Architecture

3.1 Functional Clustering

Chart 1: Function Clustering

3.2 Sub-system List

Table 1: Sub-system List

SL.No	Sub-system
1.	User Input Section
2.	Drawing Pattern Section
3.	Handling and Controlling Section
4.	Indication and Termination Section

3.3 Interaction Details

Chart 2: Intercation Details