diff --git a/personal/noah/maritime/navigation_rules.md b/personal/noah/maritime/navigation_rules.md
index 78ab034..7ad934a 100644
--- a/personal/noah/maritime/navigation_rules.md
+++ b/personal/noah/maritime/navigation_rules.md
@@ -2,69 +2,71 @@
 
 
 I. Introduction
-   A. International Rules
-   B. Inland Rules
+A. International Rules
+B. Inland Rules
 
 II. Part A - General
-    A. Rule 1: Application
-    B. Rule 2: Responsibility 
-    C. Rule 3: General Definitions
+A. Rule 1: Application
+B. Rule 2: Responsibility 
+C. Rule 3: General Definitions
 
 III. Part B - Steering and Sailing Rules
-     A. Section I - Conduct of Vessels in Any Condition of Visibility
-        1. Rule 4: Application
-        2. Rule 5: Look-out
-        3. Rule 6: Safe Speed
-        4. Rule 7: Risk of Collision
-        5. Rule 8: Action to Avoid Collision
-        6. Rule 9: Narrow Channels
-        7. Rule 10: Traffic Separation Schemes
-     B. Section II - Conduct of Vessels in Sight of One Another  
-        1. Rule 11: Application
-        2. Rule 12: Sailing Vessels
-        3. Rule 13: Overtaking
-        4. Rule 14: Head-on Situation
-        5. Rule 15: Crossing Situation
-        6. Rule 16: Action by Give-way Vessel
-        7. Rule 17: Action by Stand-on Vessel
-        8. Rule 18: Responsibilities Between Vessels
-     C. Section III - Conduct of Vessels in Restricted Visibility
-        1. Rule 19: Conduct of Vessels in Restricted Visibility
+A. Section I - Conduct of Vessels in Any Condition of Visibility
+1. Rule 4: Application
+2. Rule 5: Look-out
+3. Rule 6: Safe Speed
+4. Rule 7: Risk of Collision
+5. Rule 8: Action to Avoid Collision
+6. Rule 9: Narrow Channels
+7. Rule 10: Traffic Separation Schemes
+
+B. Section II - Conduct of Vessels in Sight of One Another  
+1. Rule 11: Application
+2. Rule 12: Sailing Vessels
+3. Rule 13: Overtaking
+4. Rule 14: Head-on Situation
+5. Rule 15: Crossing Situation
+6. Rule 16: Action by Give-way Vessel
+7. Rule 17: Action by Stand-on Vessel
+8. Rule 18: Responsibilities Between Vessels
+
+C. Section III - Conduct of Vessels in Restricted Visibility
+1. Rule 19: Conduct of Vessels in Restricted Visibility
 
 IV. Part C - Lights and Shapes
-    A. Rule 20: Application
-    B. Rule 21: Definitions
-    C. Rule 22: Visibility of Lights
-    D. Rule 23: Power-driven Vessels Underway
-    E. Rule 24: Towing and Pushing
-    F. Rule 25: Sailing Vessels Underway and Vessels Under Oars
-    G. Rule 26: Fishing Vessels
-    H. Rule 27: Vessels Not Under Command or Restricted in Their Ability to Maneuver
-    I. Rule 28: Vessels Constrained by Their Draft
-    J. Rule 29: Pilot Vessels 
-    K. Rule 30: Anchored Vessels and Vessels Aground
-    L. Rule 31: Seaplanes
+A. Rule 20: Application
+B. Rule 21: Definitions
+C. Rule 22: Visibility of Lights
+D. Rule 23: Power-driven Vessels Underway
+E. Rule 24: Towing and Pushing
+F. Rule 25: Sailing Vessels Underway and Vessels Under Oars
+G. Rule 26: Fishing Vessels
+H. Rule 27: Vessels Not Under Command or Restricted in Their Ability to Maneuver
+I. Rule 28: Vessels Constrained by Their Draft
+J. Rule 29: Pilot Vessels 
+K. Rule 30: Anchored Vessels and Vessels Aground
+L. Rule 31: Seaplanes
 
 V. Part D - Sound and Light Signals
-   A. Rule 32: Definitions
-   B. Rule 33: Equipment for Sound Signals
-   C. Rule 34: Maneuvering and Warning Signals
-   D. Rule 35: Sound Signals in Restricted Visibility
-   E. Rule 36: Signals to Attract Attention
-   F. Rule 37: Distress Signals
+A. Rule 32: Definitions
+B. Rule 33: Equipment for Sound Signals
+C. Rule 34: Maneuvering and Warning Signals
+D. Rule 35: Sound Signals in Restricted Visibility
+E. Rule 36: Signals to Attract Attention
+F. Rule 37: Distress Signals
 
 VI. Part E - Exemptions
-    A. Rule 38: Exemptions
-    B. Annex I: Positioning and Technical Details of Lights and Shapes 
-    C. Annex II: Additional Signals for Fishing Vessels Fishing in Close Proximity
-    D. Annex III: Technical Details of Sound Signal Appliances
-    E. Annex IV: Distress Signals
-    F. Annex V: Pilot Rules  
+A. Rule 38: Exemptions
+B. Annex I: Positioning and Technical Details of Lights and Shapes 
+C. Annex II: Additional Signals for Fishing Vessels Fishing in Close Proximity
+D. Annex III: Technical Details of Sound Signal Appliances
+E. Annex IV: Distress Signals
+F. Annex V: Pilot Rules  
 
 VII. Other Regulations
-     A. Interpretative Rules
-     B. COLREGS Demarcation Lines
-     C. Penalty Provisions 
-     D. Alternative Compliance
-     E. Waters Specified by the Secretary 
-     F. Vessel Bridge-to-Bridge Radiotelephone Regulations
+A. Interpretative Rules
+B. COLREGS Demarcation Lines
+C. Penalty Provisions 
+D. Alternative Compliance
+E. Waters Specified by the Secretary 
+F. Vessel Bridge-to-Bridge Radiotelephone Regulations