org: Tag searches

 
 6.4 Tag searches
 ================
 
 Once a system of tags has been set up, it can be used to collect related
 information into special lists.
 
 ‘C-c / m  or  C-c \     (org-match-sparse-tree)’
      Create a sparse tree with all headlines matching a
      tags/property/TODO search.  With a ‘C-u’ prefix argument, ignore
      headlines that are not a TODO line.  SeeMatching tags and
      properties.
 ‘C-c a m     (org-tags-view)’
      Create a global list of tag matches from all agenda files.  See
      Matching tags and properties.
 ‘C-c a M     (org-tags-view)’
      Create a global list of tag matches from all agenda files, but
      check only TODO items and force checking subitems (see the option
      ‘org-tags-match-list-sublevels’).
 
    These commands all prompt for a match string which allows basic
 Boolean logic like ‘+boss+urgent-project1’, to find entries with tags
 ‘boss’ and ‘urgent’, but not ‘project1’, or ‘Kathy|Sally’ to find
 entries which are tagged, like ‘Kathy’ or ‘Sally’.  The full syntax of
 the search string is rich and allows also matching against TODO
 keywords, entry levels and properties.  For a complete description with
 many examples, see SeeMatching tags and properties.