• Index - Data compatibility

  • Metadata (keywords, description, Dublin Core)

  • File formats (PDF, word processing, spreadsheets, multimedia)

  • Characters for non-English text

  • URL link following issues

  • Search "zones" - specified collections

• Advanced search

  • Boolean operators

  • emerging standards (+ -)

  • parentheses and/or multiple search fields

• date-range searching

• Thesaurus & Spellchecker to deal with vocabulary problems

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