Before displaying items in an agenda view, Org mode visually prepares the items and sorts them. Each item occupies a single line. The line starts with a prefix that contains the category (see Categories) of the item and other important information. You can customize in which column tags are displayed through
org-agenda-tags-column. You can also customize the prefix using the option
org-agenda-prefix-format. This prefix is followed by a cleaned-up version of the outline headline associated with the item.
|• Categories||Not all tasks are equal.|
|• Time-of-day specifications||How the agenda knows the time.|
|• Sorting of agenda items||The order of things.|
|• Filtering/limiting agenda items||Dynamically narrow the agenda.|