Documentation for parray and several related items should be found at
http://purl.org/tcl/home/man/tcl8.4/TclCmd/library.htm

Summary:

'''parray''' ''arrayName''

Print on standard output the names and values of all the elements in the array ''arrayName''. ''ArrayName'' must be an array accessible to the caller of '''parray'''. It may be either local or global.

In fact, it's more like this:

'''parray''' ''arrayName ?pattern?''

Print on standard output the names and values of all the elements in the array ''arrayName'' that match ''pattern''. If ''pattern'' is not specified, then all of the elements of the array are included in the result. If ''pattern'' is specified, then only those elements whose names match ''pattern'' (using the matching rules of string match) are included. ''ArrayName'' must be an array accessible to the caller of '''parray'''. It may be either local or global.

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'''parray''' prints an array's keys and values, in key alphabetic order and formatted to the longest key name, to stdout. [RS]

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See also:

   * [array]
   * [arrayval]

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