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.. _Outline:
================
Outline
================
*outline* (or "bookmark"), is a property of *Document*. If not *None*, it stands for the first outline item of the document. Its properties in turn define the characteristics of this item and also point to other outline items in "horizontal" or downward direction. The full tree of all outline items for e.g. a conventional table of contents (TOC) can be recovered by following these "pointers".
============================ ==================================================
**Method / Attribute** **Short Description**
============================ ==================================================
:attr:`Outline.down` next item downwards
:attr:`Outline.next` next item same level
:attr:`Outline.page` page number (0-based)
:attr:`Outline.title` title
:attr:`Outline.uri` string further specifying the outline target
:attr:`Outline.isExternal` target is outside this document
:attr:`Outline.is_open` whether sub-outlines are open or collapsed
:attr:`Outline.isOpen` whether sub-outlines are open or collapsed
:attr:`Outline.dest` points to link destination details
============================ ==================================================
**Class API**
.. class:: Outline
.. attribute:: down
The next outline item on the next level down. Is *None* if the item has no kids.
:type: :ref:`Outline`
.. attribute:: next
The next outline item at the same level as this item. Is *None* if this is the last one in its level.
:type: `Outline`
.. attribute:: page
The page number (0-based) this bookmark points to.
:type: int
.. attribute:: title
The item's title as a string or *None*.
:type: str
.. attribute:: is_open
Or *isOpen* -- an indicator showing whether any sub-outlines should be expanded (*True*) or be collapsed (*False*). This information should be interpreted by PDF display software accordingly.
:type: bool
.. attribute:: isExternal
A bool specifying whether the target is outside (*True*) of the current document.
:type: bool
.. attribute:: uri
A string specifying the link target. The meaning of this property should be evaluated in conjunction with *isExternal*. The value may be *None*, in which case *isExternal == False*. If *uri* starts with *file://*, *mailto:*, or an internet resource name, *isExternal* is *True*. In all other cases *isExternal == False* and *uri* points to an internal location. In case of PDF documents, this should either be *#nnnn* to indicate a 1-based (!) page number *nnnn*, or a named location. The format varies for other document types, e.g. *uri = '../FixedDoc.fdoc#PG_21_LNK_84'* for page number 21 (1-based) in an XPS document.
:type: str
.. attribute:: dest
The link destination details object.
:type: :ref:`linkDest`
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