Different rules for different parts of the lifecycle

• After XML conversion/Before copy-edit
  • details of publication (issue, pages) not known
  • large structure validation
  • essential elements
  • essential content (no blank titles)
• After copyedit
  • rerun initial rules
  • journal-specific rules
  • detailed style rules
  • reference and DOI checks

Manuscript becomes more correct as it travels through the editorial flow