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CFF Format Elements

Steve Robbins. CFF Format Elements. Core and Non-core. Core is a minimum requirement to be “IWB Compatible” Based on a feature matrix of existing IWB software API support for querying file characteristics ( IWB_DocumentCoreFeaturesOnly ) “ Downlevelling ” takes 2 forms

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CFF Format Elements

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  1. Steve Robbins CFF Format Elements

  2. Core and Non-core • Core is a minimum requirement to be “IWB Compatible” • Based on a feature matrix of existing IWB software • API support for querying file characteristics (IWB_DocumentCoreFeaturesOnly) • “Downlevelling” takes 2 forms • Fallback using “Switch” • “Convention” based fallback

  3. Fallback using “Switch” • Used for “media type” support • Media provides a “requiredExtensions” attribute • Switch statement provides fallback file formats and

  4. Fallback using “Switch”

  5. Fallback using “Switch”

  6. Convention Based Fallback • Sensible guidelines for fallback • Convention based and full guidance part of the “live” FAQ document • Fall into 4 main categories: • Fills – Default to transparent • Lines – Default to standard lines • Features - Ignore • Audio – Ignore with user feedback

  7. Demonstration Sample Files

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