title: TagSet Key Type
role: manual
tags: #manual #meta #reference #zettel #zettelstore
syntax: zmk
back: 00001006030000 00001007031140 00001007770000 00001012051400 00001012931200
backward: 00001006030000 00001007031140 00001007770000 00001012051400 00001012931200
box-number: 1
copyright: (c) 2020-present by Detlef Stern <ds@zettelstore.de>
created: 20210212135017
forward: 00001006033500
lang: en
license: EUPL-1.2-or-later
modified: 20230419175642
published: 20230419175642
visibility: public

Values of this type denote a (sorted) set of tags.

A set is different to a list, as no duplicate values are allowed.
=== Allowed values
Every tag must must begin with the number sign character (""''#''"", U+0023), followed by at least one printable character.
Tags are separated by space characters.

All characters are mapped to their lower case values.
=== Query comparison
All comparisons are done case-sensitive, i.e. ""#hell"" will not be the prefix of ""#Hello"".
=== Sorting
Sorting is done by comparing the [[String|00001006033500]] values.