Active

• Order of element processing controlled by user
• Better control of how the information is extracted
• More complex templates
• Less constrained on well-formedness of the output

Passive

• Built-in template controls processing order
  • Order is document order
• Simple separate templates
• But each must be well formed
• Limits the applicability
• Quite similar to a CSS style sheet approach

Often a mixed approach is used

Further control can be provided via sorting and conditionals