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What's New > Guideline Archive > Updated NGC Summaries
Use the index below to find guidelines (listed by guideline developer) that have been updated. Select "All" to see a complete list of updated NGC Guideline Summaries (organized alphabetically by guideline developer). In each case the withdrawn guideline has been replaced with a new/revised guideline. For a list of guidelines that have been permanently withdrawn from the site, go to Withdrawn NGC Summaries.