The following video explains the altitude restrictions and other altitudes published on a STAR, Standard Terminal Arrival Procedures. The following video includes examples of how altitude restrictions apply when you are given the clearance to "Descend Via" a STAR.
The following arrival procedures are mentioned in the video and can be viewed and downloaded by clicking on the image below:
PAWLING TWO ARRIVAL JFK:
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PHLBO TWO ARRIVAL EWR:
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