Technical Requirements

Syntax Design Goals

• Human readable - tatters can read raw TatML
  
• Machine parseable - tools can validate and process
  
• Extensible - new elements can be added
  
• Compact - not overly verbose for simple patterns
  
• Intuitive numbering - 1-based indexing throughout

Output Requirements

• Generate traditional text instructions
  
• Produce visual diagrams (SVG)
  
• Validate pattern structural integrity
  
• Calculate thread length estimates
  
• Handle color specifications and changes

Error Handling

• Detect impossible joins
  
• Identify thread continuity breaks
  
• Report missing element references
  
• Validate color change points
  
• Suggest corrections when possible