[[Explain what's meant.]]

























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There are two choices for passing [array]s both "into" and "out of"
[proc]-s:
   * serialization, generally into a list with "array get ..."
   * local proxying of an external variable by use of [upvar] or occasionally [uplevel]




[[Examples]]
   * Array from pairlist: ''array set A {city Hamilton state TX zip 34567}''
   * Array to pairlist: ''set L [[array get A]]''
   * Copying an array: ''array set B [[array get A]]''