# Documentation Writing Standards

**Version:** v1.0.0  
**Domain:** documentation  
**Type:** Process  
**Risk Level:** HIGH  
**Maturity Level:** Production  
**Author:** MCP Standards Team  
**Created:** 2025-07-08T00:00:00.000000  
**Last Updated:** 2025-07-08T00:00:00.000000  

## Purpose

Comprehensive standards for creating clear, maintainable, and user-focused technical documentation

This Documentation Writing standard defines the requirements, guidelines, and best practices for creating technical documentation including API documentation, README files, architecture documentation, user guides, and release notes. It provides comprehensive guidance for documentation planning, writing, testing, and maintenance while ensuring consistency and accuracy.

**Documentation Focus Areas:**
- **API Documentation**: OpenAPI, AsyncAPI, and GraphQL schemas
- **README Templates**: Project setup and usage documentation
- **Architecture Docs**: C4 models, ADRs, and system design
- **User Guides**: End-user documentation and tutorials
- **Release Notes**: Changelogs and version documentation
- **Docs-as-Code**: Documentation workflows and automation

## Scope

This Documentation Writing standard applies to:
- All API documentation and specifications
- README files and quick start guides
- Architecture documentation and design decisions
- User manuals and administration guides
- Developer guides and API references
- Release notes and changelogs
- Documentation testing and validation
- Documentation automation and CI/CD

## Implementation

### Documentation Requirements

**NIST Controls:** NIST-AC-2, AC-3, AC-14, CM-3, CM-4, CM-8, CP-9, IA-2, PL-2, PM-15, SA-5, SA-17, SC-8, SI-12

**Documentation Standards:** Write the Docs, Google Developer Documentation Style Guide
**API Standards:** OpenAPI 3.1, AsyncAPI 2.5, GraphQL
**Accessibility:** WCAG 2.1 AA compliance
**Version Control:** Git-based documentation management

### API Documentation Standards

#### OpenAPI Specification Template
```yaml
openapi: 3.1.0
info:
  title: Service Name API
  description: |
    ## Overview
    Clear description of what this API does and its primary use cases.
    
    ## Authentication
    This API uses Bearer token authentication. Include the token in the Authorization header:
    ```
    Authorization: Bearer YOUR_API_TOKEN
    ```
    
    ## Rate Limiting
    - 1000 requests per hour per API key
    - 100 concurrent requests maximum
    
    ## Error Handling
    All errors follow RFC 7807 Problem Details format.
  version: 1.0.0
  contact:
    name: API Support
    email: api-support@example.com
    url: https://support.example.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html

servers:
  - url: https://api.example.com/v1
    description: Production server
  - url: https://staging-api.example.com/v1
    description: Staging server
  - url: http://localhost:3000/v1
    description: Local development

security:
  - bearerAuth: []

tags:
  - name: Users
    description: User management operations
  - name: Resources
    description: Resource CRUD operations
  - name: Admin
    description: Administrative functions

paths:
  /users:
    get:
      tags:
        - Users
      summary: List all users
      description: |
        Returns a paginated list of users. Results can be filtered by status,
        role, or creation date.
      operationId: listUsers
      parameters:
        - name: page
          in: query
          description: Page number (1-indexed)
          required: false
          schema:
            type: integer
            minimum: 1
            default: 1
        - name: limit
          in: query
          description: Number of items per page
          required: false
          schema:
            type: integer
            minimum: 1
            maximum: 100
            default: 20
        - name: status
          in: query
          description: Filter by user status
          required: false
          schema:
            type: string
            enum: [active, inactive, pending]
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/User'
                  meta:
                    $ref: '#/components/schemas/PaginationMeta'
              examples:
                success:
                  summary: Successful response example
                  value:
                    data:
                      - id: "123e4567-e89b-12d3-a456-426614174000"
                        email: "user@example.com"
                        name: "John Doe"
                        status: "active"
                        createdAt: "2024-01-15T09:00:00Z"
                    meta:
                      page: 1
                      limit: 20
                      total: 150
                      totalPages: 8
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '429':
          $ref: '#/components/responses/RateLimitError'

components:
  schemas:
    User:
      type: object
      required:
        - id
        - email
        - name
        - status
      properties:
        id:
          type: string
          format: uuid
          description: Unique user identifier
          example: "123e4567-e89b-12d3-a456-426614174000"
        email:
          type: string
          format: email
          description: User's email address
          example: "user@example.com"
        name:
          type: string
          description: User's full name
          minLength: 1
          maxLength: 255
          example: "John Doe"
        status:
          type: string
          enum: [active, inactive, pending]
          description: Current user status
          example: "active"
        createdAt:
          type: string
          format: date-time
          description: ISO 8601 timestamp of user creation
          example: "2024-01-15T09:00:00Z"
```

#### AsyncAPI Documentation Template
```yaml
asyncapi: 2.5.0
info:
  title: Event Streaming API
  version: 1.0.0
  description: |
    ## Overview
    Real-time event streaming API for system notifications and updates.
    
    ## Connection
    Connect via WebSocket to receive real-time events:
    ```
    wss://events.example.com/v1/stream
    ```
    
    ## Authentication
    Include authentication token in connection parameters.

servers:
  production:
    url: wss://events.example.com/v1/stream
    protocol: ws
    description: Production WebSocket server
    security:
      - bearerAuth: []

channels:
  user/created:
    description: Channel for new user creation events
    subscribe:
      summary: Receive user creation notifications
      operationId: onUserCreated
      message:
        $ref: '#/components/messages/UserCreated'
    
  user/updated:
    description: Channel for user update events
    subscribe:
      summary: Receive user update notifications
      operationId: onUserUpdated
      message:
        $ref: '#/components/messages/UserUpdated'

components:
  messages:
    UserCreated:
      name: UserCreated
      title: User Created Event
      summary: Notification when a new user is created
      contentType: application/json
      payload:
        $ref: '#/components/schemas/UserEvent'
      examples:
        - name: UserCreatedExample
          summary: Example of user creation event
          payload:
            eventId: "evt_123456"
            eventType: "user.created"
            timestamp: "2024-01-15T09:00:00Z"
            data:
              userId: "usr_789012"
              email: "newuser@example.com"
              name: "Jane Smith"
```

### README Template Standards

#### Comprehensive README Template
```markdown
# Project Name

[![Build Status](https://img.shields.io/github/workflow/status/org/repo/CI)](https://github.com/org/repo/actions)
[![Coverage](https://img.shields.io/codecov/c/github/org/repo)](https://codecov.io/gh/org/repo)
[![License](https://img.shields.io/github/license/org/repo)](LICENSE)
[![Version](https://img.shields.io/github/v/release/org/repo)](https://github.com/org/repo/releases)

One-line description of what this project does and why it exists.

## 🚀 Features

- **Feature 1**: Brief description of key capability
- **Feature 2**: What makes this project unique
- **Feature 3**: Primary benefit to users
- **Feature 4**: Technical advantage

## 📋 Table of Contents

- [Installation](#installation)
- [Quick Start](#quick-start)
- [Usage](#usage)
- [Configuration](#configuration)
- [API Reference](#api-reference)
- [Examples](#examples)
- [Development](#development)
- [Testing](#testing)
- [Deployment](#deployment)
- [Contributing](#contributing)
- [Support](#support)
- [License](#license)

## 📦 Installation

### Prerequisites

- Node.js 18+ (check with `node --version`)
- npm 9+ or yarn 1.22+
- PostgreSQL 14+ (for database)

### Package Installation

```bash
# Using npm
npm install package-name

# Using yarn
yarn add package-name

# Using pnpm
pnpm add package-name
```

### From Source

```bash
# Clone the repository
git clone https://github.com/org/repo.git
cd repo

# Install dependencies
npm install

# Build the project
npm run build
```

## 🎯 Quick Start

Get up and running in 5 minutes:

```bash
# 1. Install the package
npm install package-name

# 2. Create a configuration file
cp .env.example .env

# 3. Start the application
npm start
```

Basic usage example:

```javascript
const PackageName = require('package-name');

// Initialize with configuration
const instance = new PackageName({
  apiKey: process.env.API_KEY,
  environment: 'production'
});

// Use the main feature
const result = await instance.doSomething({
  param1: 'value1',
  param2: 'value2'
});

console.log(result);
```

## 💻 Usage

### Basic Usage

```javascript
// Import the library
import { MainClass } from 'package-name';

// Create an instance
const client = new MainClass({
  // Configuration options
});

// Perform operations
const response = await client.operation({
  // Parameters
});
```

### Advanced Usage

```javascript
// Complex configuration
const advancedClient = new MainClass({
  retries: 3,
  timeout: 5000,
  hooks: {
    beforeRequest: (config) => {
      // Modify request
      return config;
    },
    afterResponse: (response) => {
      // Process response
      return response;
    }
  }
});

// Error handling
try {
  const result = await advancedClient.complexOperation();
} catch (error) {
  if (error.code === 'RATE_LIMIT') {
    // Handle rate limiting
  }
}
```

## ⚙️ Configuration

### Environment Variables

Create a `.env` file in the root directory:

```bash
# Required
API_KEY=your_api_key_here
DATABASE_URL=postgresql://user:pass@localhost:5432/dbname

# Optional
PORT=3000
LOG_LEVEL=info
CACHE_TTL=3600
```

### Configuration Options

```javascript
const config = {
  // API Configuration
  apiKey: process.env.API_KEY,
  apiUrl: 'https://api.example.com',
  
  // Database Configuration
  database: {
    host: 'localhost',
    port: 5432,
    name: 'myapp',
    user: 'dbuser',
    password: 'dbpass'
  },
  
  // Feature Flags
  features: {
    newFeature: true,
    betaFeature: false
  },
  
  // Performance
  cache: {
    enabled: true,
    ttl: 3600
  }
};
```

## 📚 API Reference

Full API documentation is available at [https://docs.example.com](https://docs.example.com).

### Core Methods

#### `initialize(config)`
Initializes the service with the provided configuration.

**Parameters:**
- `config` (Object): Configuration object
  - `apiKey` (String, required): API key for authentication
  - `timeout` (Number, optional): Request timeout in ms (default: 5000)

**Returns:** Promise<void>

**Example:**
```javascript
await service.initialize({
  apiKey: 'your-api-key',
  timeout: 10000
});
```

## 🔧 Development

### Development Setup

```bash
# Clone the repository
git clone https://github.com/org/repo.git
cd repo

# Install dependencies
npm install

# Set up git hooks
npm run prepare

# Start development server
npm run dev
```

### Project Structure

```
project-root/
├── src/              # Source code
│   ├── index.js      # Entry point
│   ├── lib/          # Core library code
│   ├── utils/        # Utility functions
│   └── types/        # TypeScript definitions
├── tests/            # Test files
├── docs/             # Documentation
├── examples/         # Example code
└── scripts/          # Build and utility scripts
```

### Code Style

This project uses ESLint and Prettier for code formatting:

```bash
# Lint code
npm run lint

# Fix linting issues
npm run lint:fix

# Format code
npm run format
```

## 🧪 Testing

### Running Tests

```bash
# Run all tests
npm test

# Run tests in watch mode
npm run test:watch

# Run tests with coverage
npm run test:coverage

# Run specific test file
npm test src/lib/feature.test.js
```

### Writing Tests

```javascript
// Example test file
describe('Feature', () => {
  it('should perform expected behavior', async () => {
    const result = await feature.execute();
    expect(result).toBe(expected);
  });
});
```

## 🚢 Deployment

### Docker

```dockerfile
FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
EXPOSE 3000
CMD ["node", "dist/index.js"]
```

```bash
# Build Docker image
docker build -t myapp .

# Run container
docker run -p 3000:3000 myapp
```

### Cloud Deployment

#### AWS
```bash
# Deploy to AWS Lambda
npm run deploy:aws
```

#### Vercel
```bash
# Deploy to Vercel
vercel --prod
```

## 🤝 Contributing

We welcome contributions! Please see our [Contributing Guide](CONTRIBUTING.md) for details.

### Quick Contribution Guide

1. Fork the repository
2. Create your feature branch (`git checkout -b feature/amazing-feature`)
3. Commit your changes (`git commit -m 'Add amazing feature'`)
4. Push to the branch (`git push origin feature/amazing-feature`)
5. Open a Pull Request

## 🆘 Support

### Getting Help

- 📖 [Documentation](https://docs.example.com)
- 💬 [Discord Community](https://discord.gg/example)
- 🐛 [Issue Tracker](https://github.com/org/repo/issues)
- 📧 [Email Support](mailto:support@example.com)

### Reporting Issues

Please use the GitHub issue tracker to report bugs. Include:
- Node.js version
- Operating system
- Steps to reproduce
- Expected vs actual behavior

## 📄 License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

## 🙏 Acknowledgments

- Thanks to all [contributors](https://github.com/org/repo/graphs/contributors)
- Built with [awesome-library](https://github.com/awesome/library)
- Inspired by [similar-project](https://github.com/similar/project)

---

Made with ❤️ by [Your Organization](https://example.com)
```

### Architecture Documentation Standards

#### C4 Model Documentation Template
```markdown
# System Architecture Documentation

## Level 1: System Context

```mermaid
graph TB
    User[User]
    Admin[Administrator]
    System[Our System]
    ExtAPI[External API]
    Database[(Database)]
    
    User -->|Uses| System
    Admin -->|Manages| System
    System -->|Calls| ExtAPI
    System -->|Stores data| Database
```

### System Context Description

**Purpose:** Show how the system fits into the world around it.

**Elements:**
- **Users**: End users who interact with the system
- **Administrators**: System administrators and operators
- **Our System**: The software system being documented
- **External API**: Third-party services we integrate with
- **Database**: Primary data storage

## Level 2: Container Diagram

```mermaid
graph TB
    subgraph "Our System"
        WebApp[Web Application<br/>React SPA]
        API[API Server<br/>Node.js/Express]
        Worker[Background Worker<br/>Node.js]
        Cache[(Redis Cache)]
        DB[(PostgreSQL)]
    end
    
    User -->|HTTPS| WebApp
    WebApp -->|JSON/HTTPS| API
    API -->|TCP| Cache
    API -->|TCP| DB
    API -->|Queue| Worker
    Worker -->|TCP| DB
```

### Container Descriptions

#### Web Application
- **Technology**: React 18, TypeScript
- **Purpose**: User interface for the system
- **Responsibilities**: 
  - User authentication and session management
  - Data visualization and interaction
  - Real-time updates via WebSocket

#### API Server
- **Technology**: Node.js, Express, TypeScript
- **Purpose**: Business logic and data access
- **Responsibilities**:
  - Request validation and authorization
  - Business rule enforcement
  - Data transformation and aggregation
```

#### Architecture Decision Records (ADR) Template
```markdown
# ADR-001: Use PostgreSQL for Primary Database

**Status:** Accepted  
**Date:** 2024-01-15  
**Decision Makers:** Tech Lead, Architecture Team  

## Context

We need to select a primary database for our application that will store user data, 
transactions, and system configuration. The database must support:
- ACID transactions
- Complex queries with joins
- JSON data types for flexible schemas
- Horizontal scaling capabilities
- Strong ecosystem and tooling

## Decision

We will use PostgreSQL 14+ as our primary database.

## Rationale

PostgreSQL was chosen because:

1. **ACID Compliance**: Full transaction support for data integrity
2. **JSON Support**: Native JSONB type for flexible data modeling
3. **Performance**: Excellent query optimizer and indexing options
4. **Extensions**: Rich ecosystem (PostGIS, TimescaleDB, etc.)
5. **Community**: Large, active community and extensive documentation
6. **Cost**: Open source with no licensing fees

### Alternatives Considered

#### MySQL
- Pros: Widely used, good performance, strong replication
- Cons: Limited JSON support, fewer advanced features
- Reason for rejection: Less flexible for our semi-structured data needs

#### MongoDB
- Pros: Flexible schema, good for unstructured data
- Cons: No ACID transactions across documents, complex for relational data
- Reason for rejection: Our data is primarily relational

#### DynamoDB
- Pros: Fully managed, automatic scaling
- Cons: Vendor lock-in, limited query capabilities, higher cost
- Reason for rejection: Avoid AWS lock-in, need complex queries

## Consequences

### Positive
- Strong data integrity guarantees
- Flexible data modeling with JSON support
- Can leverage existing team PostgreSQL expertise
- Easy local development setup

### Negative
- Requires database administration knowledge
- Manual scaling configuration needed
- Backup and disaster recovery planning required

### Mitigation
- Use managed PostgreSQL services (RDS, Cloud SQL) in production
- Implement connection pooling with PgBouncer
- Set up automated backups and monitoring

## References
- [PostgreSQL Documentation](https://www.postgresql.org/docs/)
- [PostgreSQL JSON Functions](https://www.postgresql.org/docs/current/functions-json.html)
- Team's database evaluation spreadsheet
```

### User Guide Standards

#### User Guide Template Structure
```markdown
# Product User Guide

## Getting Started

### Welcome to [Product Name]

[Product Name] helps you [main value proposition]. This guide will walk you through
everything you need to know to get the most out of [Product Name].

### Quick Start Checklist

- [ ] Create your account
- [ ] Complete initial setup
- [ ] Configure your preferences
- [ ] Create your first [item]
- [ ] Invite team members

## First-Time Setup

### Step 1: Create Your Account

1. Navigate to [https://app.example.com/signup](https://app.example.com/signup)
2. Enter your email address
3. Create a strong password (minimum 12 characters)
4. Click "Create Account"
5. Check your email for verification link
6. Click the verification link to activate your account

![Account Creation Screenshot](images/account-creation.png)

**Tip:** Use a password manager to generate and store a secure password.

### Step 2: Initial Configuration

After logging in for the first time, you'll see the setup wizard:

1. **Organization Details**
   - Enter your organization name
   - Select your industry
   - Choose your team size

2. **Preferences**
   - Select your timezone
   - Choose notification preferences
   - Set your default language

3. **Integration Setup** (Optional)
   - Connect Slack for notifications
   - Link GitHub for code integration
   - Configure SSO if available

## Core Features

### Dashboard Overview

The dashboard is your command center for [Product Name]:

![Dashboard Overview](images/dashboard-annotated.png)

1. **Navigation Bar**: Access all major features
2. **Quick Actions**: Common tasks at your fingertips
3. **Activity Feed**: Recent changes and updates
4. **Metrics Panel**: Key performance indicators
5. **Team Activity**: See what your team is working on

### Creating Your First [Item]

To create a new [item]:

1. Click the **"+ New [Item]"** button in the top right
2. Fill in the required fields:
   - **Name**: A descriptive name
   - **Type**: Select from dropdown
   - **Description**: Detailed information
3. Configure advanced options (optional):
   - Set permissions
   - Add tags
   - Schedule automation
4. Click **"Create"** to save

**Best Practice:** Use descriptive names that your team will understand.

## Common Tasks

### Task 1: Managing Team Members

#### Adding Team Members

1. Go to **Settings → Team**
2. Click **"Invite Members"**
3. Enter email addresses (comma-separated for multiple)
4. Select role for each member:
   - **Admin**: Full access to all features
   - **Editor**: Can create and modify content
   - **Viewer**: Read-only access
5. Click **"Send Invitations"**

#### Managing Permissions

```
Admin Functions:
├── Manage billing
├── Add/remove users
├── Change organization settings
└── Delete organization data

Editor Functions:
├── Create content
├── Edit content
├── Publish changes
└── View analytics

Viewer Functions:
├── View content
├── Download reports
└── Comment on items
└── View analytics
```

## Troubleshooting

### Common Issues and Solutions

#### Cannot Log In

**Problem**: "Invalid credentials" error
**Solutions**:
1. Check caps lock is off
2. Use "Forgot Password" to reset
3. Ensure account is verified
4. Clear browser cache and cookies

#### Slow Performance

**Problem**: Application is running slowly
**Solutions**:
1. Check internet connection speed
2. Try a different browser
3. Disable browser extensions
4. Contact support if issue persists

### Error Messages

| Error Code | Message | Solution |
|------------|---------|----------|
| ERR_401 | Unauthorized access | Log in again |
| ERR_403 | Permission denied | Check your role permissions |
| ERR_404 | Resource not found | Verify the URL or item exists |
| ERR_429 | Rate limit exceeded | Wait 5 minutes and try again |
| ERR_500 | Server error | Contact support |

## Keyboard Shortcuts

Speed up your workflow with these shortcuts:

| Action | Windows/Linux | Mac |
|--------|--------------|-----|
| New item | Ctrl + N | ⌘ + N |
| Save | Ctrl + S | ⌘ + S |
| Search | Ctrl + K | ⌘ + K |
| Settings | Ctrl + , | ⌘ + , |
| Help | F1 | F1 |

## Best Practices

### Organization Tips

1. **Use Consistent Naming**
   - Prefix items by type: `[DOC] User Manual`
   - Include dates: `2024-01-15 Meeting Notes`
   - Use team codes: `SALES-Campaign-Q1`

2. **Leverage Tags**
   - Create a tag taxonomy
   - Use tags for easy filtering
   - Regularly review and clean up tags

3. **Regular Maintenance**
   - Archive completed items monthly
   - Review permissions quarterly
   - Update documentation regularly

## Support Resources

### Getting Help

- **Help Center**: [https://help.example.com](https://help.example.com)
- **Video Tutorials**: [YouTube Channel](https://youtube.com/example)
- **Community Forum**: [https://community.example.com](https://community.example.com)
- **Email Support**: support@example.com
- **Live Chat**: Available Mon-Fri, 9am-5pm EST

### Feedback

We love hearing from our users! Share your feedback:
- **Feature Requests**: [feedback.example.com](https://feedback.example.com)
- **Bug Reports**: Use the in-app bug reporter
- **User Research**: Join our research panel

## Appendix

### Glossary

- **[Term 1]**: Definition and context
- **[Term 2]**: Definition and context
- **API**: Application Programming Interface
- **SSO**: Single Sign-On
- **2FA**: Two-Factor Authentication

### System Requirements

**Supported Browsers:**
- Chrome 90+
- Firefox 88+
- Safari 14+
- Edge 90+

**Mobile Apps:**
- iOS 14+ (iPhone and iPad)
- Android 8+

**Internet Connection:**
- Minimum: 1 Mbps
- Recommended: 5+ Mbps
```

### Release Notes and Changelog Standards

#### Changelog Format (Keep a Changelog)
```markdown
# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

### Added
- New feature for user profile customization
- API endpoint for bulk operations
- WebSocket support for real-time updates

### Changed
- Updated dashboard UI for better performance
- Improved error messages for clarity
- Migrated from REST to GraphQL for user queries

### Deprecated
- `/api/v1/users` endpoint (use `/api/v2/users` instead)
- Legacy authentication method

### Removed
- Support for Internet Explorer 11
- Deprecated `getUserById` method

### Fixed
- Memory leak in data processing module
- Incorrect timestamp formatting in exports
- Race condition in concurrent file uploads

### Security
- Updated dependencies to patch CVE-2024-1234
- Implemented rate limiting on authentication endpoints

## [2.1.0] - 2024-01-15

### Added
- **Multi-language Support** (#456)
  - Added support for Spanish, French, and German
  - Automatic language detection based on browser settings
  - Language switcher in user settings

- **Advanced Search Filters** (#478)
  - Filter by date range, status, and custom fields
  - Save and share search queries
  - Export search results to CSV

- **Team Collaboration Features** (#492)
  - Real-time collaborative editing
  - In-app messaging and mentions
  - Activity notifications

### Changed
- **Performance Improvements**
  - Reduced initial load time by 40%
  - Implemented lazy loading for images
  - Optimized database queries for large datasets

- **UI/UX Enhancements**
  - Redesigned navigation menu for better usability
  - Added dark mode support
  - Improved mobile responsive design

### Fixed
- Fixed issue where deleted items appeared in search results (#501)
- Resolved timezone handling errors in scheduled tasks (#489)
- Corrected permission inheritance for nested resources (#495)

### Developer Notes
- Minimum Node.js version is now 18.0.0
- New environment variable `FEATURE_FLAGS` for feature toggling
- Database migration required (run `npm run migrate`)

## [2.0.1] - 2024-01-02

### Fixed
- Critical security vulnerability in authentication module
- Data export failing for large datasets
- Incorrect calculations in analytics dashboard

### Security
- Emergency patch for CVE-2024-0001
- Updated all dependencies to latest secure versions

[Unreleased]: https://github.com/org/repo/compare/v2.1.0...HEAD
[2.1.0]: https://github.com/org/repo/compare/v2.0.1...v2.1.0
[2.0.1]: https://github.com/org/repo/compare/v2.0.0...v2.0.1
```

#### Release Notes Template
```markdown
# Release Notes - Version 2.1.0

**Release Date:** January 15, 2024  
**Type:** Feature Release  

## 🎉 Highlights

We're excited to announce version 2.1.0, packed with highly requested features 
to improve collaboration and productivity!

### 🌍 Multi-language Support
Your team can now use [Product Name] in their preferred language. This release 
includes full translations for Spanish, French, and German, with automatic 
detection based on browser settings.

### 🔍 Advanced Search Filters
Finding what you need just got easier! The new advanced search lets you filter 
by multiple criteria, save frequent searches, and export results.

### 👥 Real-time Collaboration
Work together seamlessly with new real-time editing capabilities. See your 
teammates' changes as they happen and communicate directly within the app.

## 📋 What's New

### Features

#### Multi-language Interface
- Complete UI translation for Spanish, French, and German
- Automatic language detection
- Easy language switching in user settings
- Localized date, time, and number formats

#### Enhanced Search Capabilities
- **Date Range Filters**: Search within specific time periods
- **Status Filters**: Find items by their current state
- **Custom Field Search**: Search using your custom fields
- **Saved Searches**: Save complex queries for reuse
- **Search Export**: Download search results as CSV

#### Team Collaboration
- **Live Editing**: Multiple users can edit simultaneously
- **Presence Indicators**: See who's viewing or editing
- **In-app Messaging**: Chat with team members
- **@Mentions**: Get notified when mentioned
- **Activity Feed**: Track all team activities

### Improvements

#### Performance
- ⚡ 40% faster initial page load
- 📊 Optimized queries reduce database load by 60%
- 🖼️ Lazy loading images saves bandwidth
- 💾 Improved caching reduces server requests

#### User Interface
- 🌙 Dark mode for reduced eye strain
- 📱 Better mobile experience with gesture support
- 🎨 Refreshed design with improved contrast
- ♿ Enhanced accessibility features

## 🐛 Bug Fixes

- **Search Results**: Deleted items no longer appear in search
- **Timezone Issues**: Scheduled tasks now respect user timezones
- **Permissions**: Fixed inheritance for nested resources
- **Data Export**: Large exports no longer timeout
- **Notifications**: Duplicate notifications eliminated

## 💻 Technical Updates

### For Developers
- **Node.js 18+**: Minimum version requirement updated
- **New APIs**: WebSocket endpoints for real-time features
- **Feature Flags**: Toggle features with environment variables
- **TypeScript**: Improved type definitions for SDK

### Breaking Changes
⚠️ **Action Required**

1. **Node.js Version**: Update to Node.js 18 or higher
2. **Database Migration**: Run `npm run migrate` before starting
3. **Environment Variables**: Add `WEBSOCKET_URL` to your config

### API Changes
```diff
// Old method (deprecated)
- api.getUsers({ page: 1, limit: 20 })

// New method
+ api.users.list({ page: 1, limit: 20 })
```

## 📈 Performance Metrics

| Metric | Before | After | Improvement |
|--------|--------|-------|-------------|
| Initial Load | 3.2s | 1.9s | 40% faster |
| API Response | 250ms | 120ms | 52% faster |
| Memory Usage | 512MB | 380MB | 26% less |
| Build Size | 2.8MB | 2.1MB | 25% smaller |

## 🔄 Migration Guide

### From 2.0.x to 2.1.0

1. **Update Dependencies**
   ```bash
   npm update
   ```

2. **Run Database Migrations**
   ```bash
   npm run migrate
   ```

3. **Update Environment Variables**
   ```env
   # Add to .env file
   WEBSOCKET_URL=wss://your-domain.com
   FEATURE_FLAGS=search_v2,collab_edit
   ```

4. **Update API Calls**
   - Review deprecated methods in your code
   - Update to new API structure
   - Test thoroughly in staging

## 🙏 Acknowledgments

Special thanks to our community contributors:
- @username1 - Multi-language support implementation
- @username2 - Search performance optimization
- @username3 - Accessibility improvements

## 📞 Support

- **Documentation**: [docs.example.com/v2.1.0](https://docs.example.com/v2.1.0)
- **Migration Help**: [migration-guide.example.com](https://migration-guide.example.com)
- **Support**: support@example.com
- **Issues**: [github.com/org/repo/issues](https://github.com/org/repo/issues)

---

Thank you for using [Product Name]! We're committed to continuously improving 
your experience. Please share your feedback through our usual channels.
```

### Documentation Testing and Validation

#### Documentation Testing Framework
```python
# Documentation validation system
import re
import json
import requests
from typing import List, Dict, Any
from pathlib import Path
import markdown
from bs4 import BeautifulSoup

class DocumentationValidator:
    """Validates technical documentation for accuracy and completeness."""
    
    def __init__(self):
        self.validators = {
            'links': self.validate_links,
            'code': self.validate_code_examples,
            'structure': self.validate_structure,
            'style': self.validate_style,
            'completeness': self.validate_completeness
        }
    
    def validate_documentation(self, doc_path: Path) -> Dict[str, Any]:
        """Run all validation checks on documentation."""
        with open(doc_path, 'r') as f:
            content = f.read()
        
        results = {
            'file': str(doc_path),
            'valid': True,
            'errors': [],
            'warnings': [],
            'metrics': {}
        }
        
        # Run each validator
        for validator_name, validator_func in self.validators.items():
            validator_results = validator_func(content)
            results['errors'].extend(validator_results.get('errors', []))
            results['warnings'].extend(validator_results.get('warnings', []))
            results['metrics'][validator_name] = validator_results.get('metrics', {})
        
        results['valid'] = len(results['errors']) == 0
        return results
    
    def validate_links(self, content: str) -> Dict[str, Any]:
        """Check all links in documentation."""
        results = {'errors': [], 'warnings': [], 'metrics': {}}
        
        # Extract all links
        link_pattern = r'\[([^\]]+)\]\(([^)]+)\)'
        links = re.findall(link_pattern, content)
        
        results['metrics']['total_links'] = len(links)
        results['metrics']['broken_links'] = 0
        
        for text, url in links:
            if url.startswith('http'):
                # Check external links
                try:
                    response = requests.head(url, timeout=5)
                    if response.status_code >= 400:
                        results['errors'].append(f"Broken link: {url}")
                        results['metrics']['broken_links'] += 1
                except:
                    results['warnings'].append(f"Could not verify link: {url}")
            elif not url.startswith('#'):
                # Check internal links
                if not Path(url).exists():
                    results['errors'].append(f"Missing file: {url}")
                    results['metrics']['broken_links'] += 1
        
        return results
    
    def validate_code_examples(self, content: str) -> Dict[str, Any]:
        """Validate code examples for syntax."""
        results = {'errors': [], 'warnings': [], 'metrics': {}}
        
        # Parse markdown
        md = markdown.Markdown(extensions=['fenced_code'])
        html = md.convert(content)
        soup = BeautifulSoup(html, 'html.parser')
        
        code_blocks = soup.find_all('code')
        results['metrics']['total_code_blocks'] = len(code_blocks)
        results['metrics']['validated_blocks'] = 0
        
        for block in code_blocks:
            language = block.get('class', [''])[0].replace('language-', '')
            if language in ['python', 'javascript', 'bash', 'yaml', 'json']:
                # Validate syntax based on language
                if self._validate_syntax(block.text, language):
                    results['metrics']['validated_blocks'] += 1
                else:
                    results['errors'].append(
                        f"Invalid {language} syntax in code block"
                    )
        
        return results
    
    def validate_structure(self, content: str) -> Dict[str, Any]:
        """Check document structure and organization."""
        results = {'errors': [], 'warnings': [], 'metrics': {}}
        
        lines = content.split('\n')
        headers = [line for line in lines if line.startswith('#')]
        
        # Check for required sections
        required_sections = ['Introduction', 'Installation', 'Usage', 'API Reference']
        for section in required_sections:
            if not any(section.lower() in header.lower() for header in headers):
                results['warnings'].append(f"Missing recommended section: {section}")
        
        # Check header hierarchy
        header_levels = [len(h.split()[0]) for h in headers]
        for i in range(1, len(header_levels)):
            if header_levels[i] - header_levels[i-1] > 1:
                results['warnings'].append("Header level skip detected")
        
        results['metrics']['sections'] = len(headers)
        results['metrics']['word_count'] = len(content.split())
        
        return results
```

### Docs-as-Code Workflow

#### Documentation CI/CD Pipeline
```yaml
# .github/workflows/docs.yml
name: Documentation CI/CD

on:
  push:
    paths:
      - 'docs/**'
      - 'README.md'
      - 'CHANGELOG.md'
  pull_request:
    paths:
      - 'docs/**'

jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.11'
      
      - name: Install dependencies
        run: |
          pip install -r docs/requirements.txt
          npm install -g markdownlint-cli
      
      - name: Lint Markdown
        run: markdownlint docs/**/*.md
      
      - name: Validate links
        run: python scripts/validate_links.py docs/
      
      - name: Check code examples
        run: python scripts/validate_code_examples.py docs/
      
      - name: Test API documentation
        run: |
          npx @stoplight/spectral-cli lint docs/api/openapi.yaml
          npx @asyncapi/cli validate docs/api/asyncapi.yaml

  build:
    needs: validate
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Build documentation
        run: |
          npm install -g @doctoc/doctoc
          doctoc docs/ --github
          
      - name: Generate API docs
        run: |
          npx @redocly/openapi-cli build-docs docs/api/openapi.yaml \
            -o build/api-reference.html
      
      - name: Build static site
        run: |
          npm run docs:build
      
      - name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: documentation
          path: build/

  deploy:
    needs: build
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    steps:
      - name: Download artifacts
        uses: actions/download-artifact@v3
        with:
          name: documentation
          path: build/
      
      - name: Deploy to GitHub Pages
        uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./build
      
      - name: Update search index
        run: |
          npm run docs:index
          curl -X POST ${{ secrets.ALGOLIA_API_URL }} \
            -H "X-Algolia-API-Key: ${{ secrets.ALGOLIA_API_KEY }}" \
            -d @search-index.json
```

#### Documentation Generation Scripts
```javascript
// scripts/generate-docs.js
const fs = require('fs');
const path = require('path');
const { generateFromSchema } = require('json-schema-to-markdown');
const { parseComments } = require('comment-parser');

class DocumentationGenerator {
    constructor(config) {
        this.config = config;
        this.templates = this.loadTemplates();
    }
    
    async generateAPIDocs() {
        const routes = this.extractRoutes();
        const schemas = this.loadSchemas();
        
        let documentation = '# API Reference\n\n';
        
        for (const route of routes) {
            documentation += this.generateRouteDoc(route, schemas);
        }
        
        return documentation;
    }
    
    generateRouteDoc(route, schemas) {
        const { method, path, handler, middleware } = route;
        const comments = this.extractComments(handler);
        
        let doc = `## ${method.toUpperCase()} ${path}\n\n`;
        doc += `${comments.description}\n\n`;
        
        // Authentication
        if (middleware.includes('authenticate')) {
            doc += '**Authentication required**\n\n';
        }
        
        // Parameters
        if (comments.params) {
            doc += '### Parameters\n\n';
            doc += this.generateParamTable(comments.params);
        }
        
        // Request body
        if (comments.requestBody) {
            doc += '### Request Body\n\n';
            doc += '```json\n';
            doc += JSON.stringify(comments.requestBody.example, null, 2);
            doc += '\n```\n\n';
        }
        
        // Responses
        doc += '### Responses\n\n';
        for (const [status, response] of Object.entries(comments.responses)) {
            doc += `#### ${status} ${response.description}\n\n`;
            if (response.example) {
                doc += '```json\n';
                doc += JSON.stringify(response.example, null, 2);
                doc += '\n```\n\n';
            }
        }
        
        return doc;
    }
    
    generateParamTable(params) {
        let table = '| Parameter | Type | Required | Description |\n';
        table += '|-----------|------|----------|-------------|\n';
        
        for (const param of params) {
            table += `| ${param.name} | ${param.type} | ${param.required ? 'Yes' : 'No'} | ${param.description} |\n`;
        }
        
        return table + '\n';
    }
    
    async generateSDKDocs() {
        const methods = this.extractSDKMethods();
        let documentation = '# SDK Reference\n\n';
        
        for (const method of methods) {
            documentation += this.generateMethodDoc(method);
        }
        
        return documentation;
    }
    
    generateMethodDoc(method) {
        const { name, description, params, returns, example } = method;
        
        let doc = `### \`${name}(${this.formatParams(params)})\`\n\n`;
        doc += `${description}\n\n`;
        
        if (params.length > 0) {
            doc += '**Parameters:**\n\n';
            for (const param of params) {
                doc += `- \`${param.name}\` (${param.type}): ${param.description}\n`;
            }
            doc += '\n';
        }
        
        if (returns) {
            doc += `**Returns:** ${returns.type} - ${returns.description}\n\n`;
        }
        
        if (example) {
            doc += '**Example:**\n\n```javascript\n';
            doc += example;
            doc += '\n```\n\n';
        }
        
        return doc;
    }
}

// Run documentation generation
const generator = new DocumentationGenerator({
    sourcePath: './src',
    outputPath: './docs',
    includePrivate: false
});

generator.generateAPIDocs().then(docs => {
    fs.writeFileSync('./docs/api-reference.md', docs);
    console.log('API documentation generated successfully');
});
```

### Documentation Style Guide

#### Writing Guidelines
```markdown
# Documentation Style Guide

## Voice and Tone

### Be Clear and Direct
- Use simple, straightforward language
- Avoid jargon unless necessary (and define it)
- Write in active voice
- Be concise without sacrificing clarity

### Be Helpful and Empathetic
- Anticipate user needs and questions
- Provide context for complex topics
- Include examples for abstract concepts
- Acknowledge when tasks might be difficult

## Grammar and Style

### Sentence Structure
- Keep sentences short (< 25 words when possible)
- Use parallel construction in lists
- Start sentences with the most important information
- Avoid nested clauses

### Technical Terms
- Define acronyms on first use: "API (Application Programming Interface)"
- Use consistent terminology throughout
- Maintain a glossary for complex projects
- Link to detailed explanations for advanced concepts

## Formatting Standards

### Headers
- Use sentence case: "Getting started with the API"
- Don't use punctuation in headers
- Keep headers descriptive but concise
- Maintain logical hierarchy (don't skip levels)

### Code Examples
- Always specify the language for syntax highlighting
- Include comments to explain complex logic
- Show both successful and error cases
- Keep examples runnable and self-contained

### Lists
- Use numbered lists for sequential steps
- Use bullet points for non-sequential items
- Keep list items parallel in structure
- Don't mix instructions with explanations

## Common Patterns

### Documenting APIs
```
## Endpoint Name

Brief description of what this endpoint does.

### Request

`METHOD /path/to/endpoint`

**Headers:**
- `Authorization`: Bearer token
- `Content-Type`: application/json

**Parameters:**
| Name | Type | Required | Description |
|------|------|----------|-------------|
| id | string | Yes | Resource identifier |

**Body:**
```json
{
  "field": "value"
}
```

### Response

**Success (200):**
```json
{
  "result": "success"
}
```

**Error (400):**
```json
{
  "error": "Invalid input"
}
```
```

### Documenting Configuration
```
## Configuration Options

### Required Settings

**`API_KEY`**
- Type: String
- Description: Your API key for authentication
- Example: `sk_live_1234567890abcdef`

### Optional Settings

**`TIMEOUT`**
- Type: Integer
- Default: `5000`
- Description: Request timeout in milliseconds
- Example: `10000`
```
```

### Best Practices

#### Documentation Maintenance
1. **Keep Documentation Updated**
   - Update docs with every code change
   - Review documentation quarterly
   - Remove outdated information promptly
   - Version documentation with code

2. **Make Documentation Discoverable**
   - Clear navigation structure
   - Comprehensive search functionality
   - Cross-references between related topics
   - SEO optimization for public docs

3. **Gather Feedback**
   - Include feedback mechanisms
   - Track documentation analytics
   - Conduct user testing
   - Iterate based on user needs

#### Documentation Review Checklist
```yaml
review_checklist:
  accuracy:
    - [ ] All code examples tested and working
    - [ ] API endpoints verified
    - [ ] Configuration options current
    - [ ] Version numbers updated
  
  completeness:
    - [ ] All features documented
    - [ ] Common use cases covered
    - [ ] Troubleshooting section included
    - [ ] Migration guides provided
  
  clarity:
    - [ ] Clear introduction and overview
    - [ ] Step-by-step instructions
    - [ ] Visual aids where helpful
    - [ ] Glossary for technical terms
  
  usability:
    - [ ] Easy to navigate
    - [ ] Search functionality works
    - [ ] Mobile-friendly layout
    - [ ] Accessible to screen readers
```

### Tools and Resources

#### Documentation Tools
- **Static Site Generators**: MkDocs, Docusaurus, Sphinx
- **API Documentation**: Swagger/OpenAPI, Redoc, Postman
- **Markdown Editors**: VS Code, Typora, Mark Text
- **Diagramming**: Mermaid, PlantUML, Draw.io
- **Screenshot Tools**: ShareX, Flameshot, CleanShot
- **Version Control**: Git, GitHub, GitLab

#### Documentation Templates
```bash
docs-templates/
├── api/
│   ├── endpoint.md
│   ├── authentication.md
│   └── errors.md
├── guides/
│   ├── quickstart.md
│   ├── tutorial.md
│   └── how-to.md
├── reference/
│   ├── configuration.md
│   ├── cli-commands.md
│   └── sdk-methods.md
└── templates/
    ├── adr.md
    ├── changelog.md
    └── release-notes.md
```

### Compliance and Standards

#### Documentation Compliance
- **Accessibility**: WCAG 2.1 AA compliance
- **Localization**: i18n ready structure
- **Legal**: Proper licensing and attribution
- **Security**: No credentials or sensitive data
- **Privacy**: GDPR compliant examples

### Metrics and Analytics

#### Documentation Metrics
```python
class DocumentationMetrics:
    """Track documentation quality and usage metrics."""
    
    def __init__(self):
        self.metrics = {
            'coverage': self.calculate_coverage,
            'quality': self.assess_quality,
            'usage': self.track_usage,
            'feedback': self.analyze_feedback
        }
    
    def calculate_coverage(self) -> float:
        """Calculate percentage of code that is documented."""
        total_functions = self.count_functions()
        documented_functions = self.count_documented_functions()
        
        return (documented_functions / total_functions) * 100
    
    def assess_quality(self) -> Dict[str, float]:
        """Assess documentation quality metrics."""
        return {
            'readability_score': self.calculate_readability(),
            'completeness_score': self.check_completeness(),
            'accuracy_score': self.verify_accuracy(),
            'freshness_score': self.check_freshness()
        }
    
    def track_usage(self) -> Dict[str, int]:
        """Track how documentation is being used."""
        return {
            'page_views': self.get_page_views(),
            'search_queries': self.get_search_queries(),
            'time_on_page': self.get_average_time(),
            'bounce_rate': self.get_bounce_rate()
        }
```

### Version Control

This standard is version controlled with semantic versioning:
- **Major**: Significant changes to documentation structure
- **Minor**: New documentation types or tools
- **Patch**: Updates to templates or examples

### Related Standards
- TECHNICAL_CONTENT_CREATION_STANDARDS.md
- CODE_REVIEW_STANDARDS.md
- API_DESIGN_STANDARDS.md
- KNOWLEDGE_MANAGEMENT_STANDARDS.md