1. Writing: The 717 i is great for everyday writing, journaling, and note-taking. Its comfortable grip and smooth ink flow make it a pleasure to use.

2. Drawing and Illustration: The pen's fine tip (0.5mm or 0.7mm) and waterproof ink make it suitable for drawing, illustration, and cartooning.

3. Signing documents: The 717 i's ink is lightfast and water-resistant, making it a good choice for signing important documents.

4. Artistic purposes: The pen's vibrant ink colors and blendability make it popular among artists, calligraphers, and lettering enthusiasts.

5. Journaling and Bullet Journaling: The 717 i is a favorite among journalers and bullet journalists due to its smooth writing experience and variety of color options.

6. Exam writing: The pen's comfortable grip and reliable ink flow make it a popular choice for writing exams and tests.

7. Office and school use: The 717 i is a versatile pen for everyday use in offices, schools, and homes.