title: IdentifierSet Key Type
role: manual
tags: #manual #meta #reference #zettel #zettelstore
syntax: zmk
back: 00001006030000 00001007720300 00001012931200
backward: 00001006030000 00001007720300 00001012931200
box-number: 1
copyright: (c) 2020-present by Detlef Stern <ds@zettelstore.de>
created: 20210212135017
forward: 00001006032000 00001006032500 00001006033500 00001006050000
lang: en
license: EUPL-1.2-or-later
modified: 20230419175551
published: 20230419175551
visibility: public

Values of this type denote a (sorted) set of [[zettel identifier|00001006050000]].

A set is different to a list, as no duplicate values are allowed.
=== Allowed values
Must be at least one sequence of 14 digits (""0""–""9""), separated by space characters.
=== Query comparison
A value matches an identifier set value, if the value matches any of the identifier set values.

For example, ""000010060325"" is a prefix ""[[00001006032000]] [[00001006032500]]"".
=== Sorting
Sorting is done by comparing the [[String|00001006033500]] values.