org-agenda-entry-types

org-agenda-entry-types is a variable defined in `org-agenda.el'.
Its value is

(:deadline :scheduled :timestamp :sexp)

Documentation:
List of types searched for when creating the daily/weekly agenda.
This variable is a list of symbols that controls the types of
items that appear in the daily/weekly agenda. Allowed symbols in this
list are are

:timestamp List items containing a date stamp or date range matching
the selected date. This includes sexp entries in angular
brackets.

:sexp List entries resulting from plain diary-like sexps.

:deadline List deadline due on that date. When the date is today,
also list any deadlines past due, or due within
`org-deadline-warning-days'. `:deadline' must appear before
`:scheduled' if the setting of
`org-agenda-skip-scheduled-if-deadline-is-shown' is to have
any effect.

:deadline* Same as above, but only include the deadline if it has an
hour specification as [h]h:mm.

:scheduled List all items which are scheduled for the given date.
The diary for *today* also contains items which were
scheduled earlier and are not yet marked DONE.

:scheduled* Same as above, but only include the scheduled item if it
has an hour specification as [h]h:mm.

By default, all four non-starred types are turned on.

When :scheduled* or :deadline* are included, :schedule or :deadline
will be ignored.

Never set this variable globally using `setq', because then it
will apply to all future agenda commands. Instead, bind it with
`let' to scope it dynamically into the agenda-constructing
command. A good way to set it is through options in
`org-agenda-custom-commands'. For a more flexible (though
somewhat less efficient) way of determining what is included in
the daily/weekly agenda, see `org-agenda-skip-function'.