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→db:node-pre
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| '''Summary'''
|Returns the ''pre'' values of the nodes supplied by {{Code|$nodes}}, which must all be [[#Database Nodes|database nodes]]. <br/>The ''pre'' [[Node Storage#Node Table|PRE value ]] provides access to a database node in constant time, but it is will change whenever a node with a smaller ''transientpre'', i.e., it may change when values is added to or deleted from a database updates are performed.
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| '''Errors'''
