The Fair Use Guidelines for Educational Multimedia provide for specific limits on the amount of copyrighted works that may be used. For motion media -(e.g., video clips) up to 10% or 3 minutes, whichever is less. For text- up to 10% or 1000 words, whichever less. For poems - up to 250 words. Three poem limit per poet Five poem limit by different poets from an anthology. For music - up to 10% or 30 seconds, whichever is less. For photos and images Up to 5 works from one author. Up to 10% or 15 works, whichever is less, from a collection. Database information-- up to 10% or 2,500 fields or cell entries, whichever is less. See Harper