Purpose

Exports the Links/Bookmarks catalog as OPML XML.

Flow

• Loads WordPress.
• Determines link category filter from query string.
• Outputs OPML header and iterates link categories.
• Outputs bookmark outlines for each category.

Key functions called

• get_categories()
• get_bookmarks()
• get_bloginfo()

Hooks fired

• Actions:
  • opml_head
• Filters:
  • link_category
  • link_title