slide 39

These Composition Systems Use XML

But XML Does Not Control

• But the composition system (not the XML) controls
  • Page layout and text flow into layout objects
  • Hyphenation and Justification
  • Column balancing
  • Selective spreading of vertical whitespace at justification points
• The composition system does this too (but XML metadata may advise)
  • Floats and keeps
  • Windows and orphans (but metadata may advise)
  • Real color (in all its meanings)
    although tagging may suggest
    (such as color="BK#0000" in HTML)
  • Illuminated initial caps