Types of pages 

TYPO3 has predefined a number of pages types as constants in typo3/sysext/core/Classes/Domain/Repository/PageRepository.php.

What role each page type plays and when to use it is explained in more detail in Page types. Some of the page types require additional fields in pages to be filled out:

DOKTYPE_DEFAULT - ID: 1

Standard

DOKTYPE_LINK - ID: 3

Link to external URLs, other pages, content elements, files, folders, email addresses or custom records (for example, news records).

This type of page creates a redirect to a URL in the frontend. The URL is specified in the pages.url field.

DOKTYPE_SHORTCUT - ID: 4

Shortcut

This type of page creates a redirect to another page in the frontend. The shortcut target is specified in the field pages.shortcut, shortcut mode is stored in pages.shortcut_mode.

DOKTYPE_BE_USER_SECTION - ID: 6

Backend user Section

DOKTYPE_MOUNTPOINT - ID: 7

Mount point

The mounted page is specified in pages.mount_pid, while display options can be changed with pages.mount_pid_ol. See MountPoints documentation.

DOKTYPE_SPACER - ID: 199

Menu separator

DOKTYPE_SYSFOLDER - ID: 254

Folder

A folder is a place where records from various database tables can be stored. Some records may only be created in folders and are not available on standard pages.

It can also be used to group standard pages so they can be displayed in a custom menu.