In this lesson, you have:
Upgraded the document type to XHTML (pages 3845)
Used Find and Replace to automate changes to source code (pages 4247)
Replaced obsolete tags with current tags (pages 4850)
Stripped tags from code (pages 5052)
Closed empty elements in proper XHTML syntax (pages 5256)
Found and fixed images lacking alt attributes (pages 5661)
Validated your page for XHTML 1.0 Transitional compliance (pages 6163)