An important feature of Org mode is the ability to construct sparse trees for selected information in an outline tree, so that the entire document is folded as much as possible, but the selected information is made visible along with the headline structure above it1. Just try it out and you will see immediately how it works.
Org mode contains several commands creating such trees, all these commands can be accessed through a dispatcher:
For frequently used sparse trees of specific search strings, you can
use the variable
org-agenda-custom-commands to define fast
keyboard access to specific sparse trees. These commands will then be
accessible through the agenda dispatcher (see Agenda dispatcher).
(setq org-agenda-custom-commands '(("f" occur-tree "FIXME")))
will define the key C-c a f as a shortcut for creating a sparse tree matching the string ‘FIXME’.
The other sparse tree commands select headings based on TODO keywords, tags, or properties and will be discussed later in this manual.
To print a sparse tree, you can use the Emacs command
ps-print-buffer-with-faces which does not print invisible parts
of the document 3.
Or you can use the command C-c C-e v to export only the visible
part of the document and print the resulting file.
 See also the
org-show-entry-below for detailed
control on how much context is shown around each match.
 This depends on the option
 This does not work under XEmacs, because XEmacs uses selective display for outlining, not text properties.