Due to the way Org works, TODO items, time-stamped items, and tagged headlines can be scattered throughout a file or even a number of files. To get an overview of open action items, or of events that are important for a particular date, this information must be collected, sorted and displayed in an organized way.
The extracted information is displayed in a special agenda buffer. This buffer is read-only, but provides commands to visit the corresponding locations in the original Org files, and even to edit these files remotely. Remote editing from the agenda buffer means, for example, that you can change the dates of deadlines and appointments from the agenda buffer. For commands available in the Agenda buffer, see Commands in the Agenda Buffer.