7.1 Tag inheritance

Tags make use of the hierarchical structure of outline trees. If a heading has a certain tag, all subheadings will inherit the tag as well. For example, in the list

     * Meeting with the French group      :WORK:
     ** Summary by Frank                  :BOSS:NOTES:
     *** TODO Prepare slides for him      :ACTION:

the final heading will have the tags `:WORK:', `:BOSS:', `:NOTES:', and `:ACTION:'. When executing tag searches and Org-mode finds that a certain headline matches the search criterion, it will not check any sublevel headline, assuming that these likely also match, and that the list of matches can become very long. This may not be what you want, however, and you can influence inheritance and searching using the variables org-use-tag-inheritance and org-tags-match-list-sublevels.