1. Edit the coordinates in the code above
2. Click "Update Display" to see changes
3. Use "Add Line" for a new line template
4. Coordinates are in (x,y) format: <line x1="0" y1="0" x2="50" y2="0"/>
Current shape points: (0,0) → (50,0) → (75,-43.3) → (125,-43.3) → (150,0)