Update .gitignore to include scripts for loading environment variables and Git credentials. Remove obsolete documentation files including 100_PERCENT_LINK_VERIFICATION_ACHIEVED.md, CROSS_REFERENCE_VERIFICATION_REPORT.md, DOCUMENT_RELATIONSHIP_VISUALIZATION.md, and several project management reports to streamline the repository and enhance maintainability. Revise DOCUMENT_RELATIONSHIP_MAP.md to correct link paths and add a new section for visual specifications.

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+# ACCESSIBILITY ENHANCEMENTS SPECIFICATION
+## Requirements and Specifications for Documentation Accessibility
+
+---
+
+## DOCUMENT METADATA
+
+**Document Number:** DBIS-SYS-AES-001  
+**Version:** 1.0  
+**Date:** 2024-12-08  
+**Classification:** UNCLASSIFIED  
+**Authority:** DBIS Executive Directorate  
+**Approved By:** [See signature block - requires SCC approval]  
+**Effective Date:** 2024-12-08  
+**Distribution:** Distribution Statement A - Public Release Unlimited
+
+**Change Log:**
+- 2024-12-08 - Version 1.0 - Initial Release
+
+---
+
+## EXECUTIVE SUMMARY
+
+This document specifies requirements for enhancing documentation accessibility including screen reader compatibility, keyboard navigation, high contrast mode, and text-to-speech support.
+
+**Purpose:** Ensure documentation is accessible to all users, including those with disabilities.
+
+---
+
+## ACCESSIBILITY REQUIREMENTS
+
+### 1. Screen Reader Compatibility
+
+**Purpose:** Support screen reader users
+
+**Requirements:**
+- Semantic HTML structure
+- ARIA attributes
+- Alt text for images
+- Descriptive link text
+- Form labels
+
+**Standards:**
+- WCAG 2.1 AA compliance
+- Screen reader testing
+- Accessibility validation
+
+---
+
+### 2. Keyboard Navigation
+
+**Purpose:** Full keyboard accessibility
+
+**Requirements:**
+- Tab navigation
+- Keyboard shortcuts
+- Focus indicators
+- Skip links
+- Keyboard-only operation
+
+**Standards:**
+- WCAG 2.1 AA compliance
+- Keyboard testing
+- Focus management
+
+---
+
+### 3. High Contrast Mode
+
+**Purpose:** Support high contrast displays
+
+**Requirements:**
+- High contrast color schemes
+- Configurable contrast
+- Text readability
+- Element visibility
+- Color independence
+
+**Standards:**
+- WCAG 2.1 AA contrast ratios
+- High contrast testing
+- User customization
+
+---
+
+### 4. Text-to-Speech
+
+**Purpose:** Audio reading support
+
+**Requirements:**
+- Text-to-speech integration
+- Audio controls
+- Reading speed control
+- Voice selection
+- Audio quality
+
+**Implementation:**
+- TTS engine integration
+- Audio player interface
+- Controls and settings
+
+---
+
+## IMPLEMENTATION PLAN
+
+### Phase 1: Basic Accessibility (Months 1-2)
+
+**Deliverables:**
+- Screen reader compatibility
+- Keyboard navigation
+- Basic accessibility
+
+### Phase 2: Enhanced Accessibility (Months 3-4)
+
+**Deliverables:**
+- High contrast mode
+- Text-to-speech
+- Advanced features
+
+### Phase 3: Testing and Optimization (Months 5-6)
+
+**Deliverables:**
+- Comprehensive testing
+- User testing
+- Optimization
+
+---
+
+## RELATED DOCUMENTS
+
+- [Technical Standards](../../11_technical_specs/Technical_Standards.md) - Technical standards
+- [Mobile Format Specification](Mobile_Format_Specification.md) - Mobile optimization
+
+---
+
+**END OF ACCESSIBILITY ENHANCEMENTS SPECIFICATION**
+