Here is an example of an edge:
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<br>'GROWLING CRY'
<br>Felar who have mastered the Feral Growl may learn to incorporate some elements
<br>of a Feral Growl into their warcries.
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<br>See also: 'EDGES', 'FELAR', 'FERAL GROWL', 'WARCRY', 'INHERENT'
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<br>The part where it says "See also:" is an indication of requirements needed to gain the edge in question. This is true in a vast majority of the cases.
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<br>Some things that generally aren't noted in the helpfiles are hidden stat requirements, such as strength/intelligence, size, etc.