Revision is an important aspect of exam preparation, especially when it comes to optional subjects like Law for the UPSC exam. Here are some specific revision techniques and strategies that can help you effectively revise the Law optional subject.

1. Understand the Syllabus:
- Familiarize yourself with the syllabus to have a clear understanding of the topics and subtopics that need to be covered.
- Divide the syllabus into manageable sections and create a study plan accordingly.

2. Make Concise Notes:
- While studying, create concise and organized notes that highlight the key concepts, cases, and provisions.
- Use headings, subheadings, and bullet points to make the notes visually appealing and easy to revise.

3. Case Law Analysis:
- Law optional subject requires a thorough understanding of case laws. Create a separate section in your notes to analyze and summarize important case laws.
- Include the facts, issues, arguments, and the court's judgment in a concise manner.
- Connect the case laws with relevant provisions and concepts.

4. Diagrams and Flowcharts:
- Law subjects often involve complex legal concepts and procedures. Using diagrams and flowcharts can help in visualizing and understanding these concepts better.
- Create flowcharts for legal procedures, acts, and concepts to have a clear and organized representation.

5. Practice Previous Year Question Papers:
- Solving previous year question papers is an effective way to revise and understand the exam pattern.
- Analyze the questions and identify the areas where you need to focus more.
- Try to answer the questions within the time limit to improve your speed and accuracy.

6. Group Discussions and Mock Tests:
- Engage in group discussions with fellow aspirants or join online forums to discuss important topics and clarify doubts.
- Take regular mock tests to evaluate your preparation level and identify areas of improvement.
- Analyze the answers and seek feedback to understand your strengths and weaknesses.

7. Revision Timetable:
- Create a revision timetable that includes dedicated time slots for each topic.
- Allocate more time for complex topics and areas where you feel less confident.
- Follow the timetable strictly to ensure systematic and comprehensive revision.

Remember, revision is not just about reading and memorizing. It is about understanding the concepts, connecting them, and applying them to different scenarios. Use these techniques along with consistent practice to excel in the Law optional subject for the UPSC exam.