High-density writing style
- Optimize for conciseness, brevity, scannability
- Use lists, sentence fragments, broken grammar OK
- Remove unnecessary articles, verbose phrasing
- Direct, high-density language
Example
# User authentication system
**Goal:** Implement secure auth flow with session management
## Requirements
### F1: Login flow
- F1.1: Email/password validation — check format, non-empty
- F1.2: Rate limiting — max 5 attempts per 15min window
### F2: Security
- **Password hashing:** bcrypt with cost factor 12
- **HTTPS only:** reject non-secure connections
- **CSRF protection:** validate tokens on state-changing operations
## Technical approach
**Database schema:**
- `users` table: id, email, password_hash, created_at
- `sessions` table: token_hash, user_id, expires_at, last_active
**Flow:**
1. Client submits credentials
2. Server validates, checks rate limit
3. Generate JWT, create session record
