Attributes common to many map elements

This attribute group collects several attributes that are used on a variety of map elements. For a few elements, the group is modified slightly to remove an attribute such as @toc or @format; in those cases the element definition will clarify that the element does not use this full set. That is generally done in order to specify a default for one attribute, such as defaulting @format to "ditamap" on the <mapref> element.

@cascade

Controls how metadata attributes cascade within a map. There are two defined values that should be supported: "merge" and "nomerge". If no value is set, and no value cascades from an ancestor element, processors SHOULD assume a default of "merge". See Cascading of metadata attributes in a DITA map for more information about how this attribute interacts with metadata attributes.

@collection-type

Collection types describe how links relate to each other. The processing default is "unordered", although no default is specified in the DTD or Schema. Allowable values are:

unordered: Indicates that the order of the child topics is not significant.
sequence: Indicates that the order of the child topics is significant; output processors will typically link between them in order.
choice: Indicates that one of the children should be selected.
family: Represents a tight grouping in which each of the referenced topics not only relates to the current topic but also relate to each other.
-dita-use-conref-target: See Using the -dita-use-conref-target value for more information.

Usage of the @collection-type attribute on <reltable> and <relcolspec> is currently undefined and reserved for future use.

@processing-role

Describes the processing role of the referenced topic. The processing default is "normal". If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will cascade from the closest ancestor. Allowable values are:

normal: Normal topic that is a readable part of the information.
resource-only: The topic is used as a resource for processing purposes. This topic should not be included in a rendered table of contents, and the topic should not be rendered on its own.
-dita-use-conref-target: See Using the -dita-use-conref-target value for more information.

@locktitle

If the @locktitle attribute is set to "yes", the content of the <navtitle> element or @navtitle attribute is used for a navigation title, if it is present. If the @locktitle attribute is not present or set to "no", the content of the <navtitle> element or @navtitle attribute is ignored, and the title of the referenced topic is used as a navigation title.

Note: The @navtitle attribute is deprecated in favor of the <navtitle> element. When both a <navtitle> element and a @navtitle attribute are specified, the <navtitle> element should be used.

Allowable values for @locktitle are:

yes: The content of the <navtitle> element or @navtitle attribute is used for a navigation title.
no: The content of the <navtitle> element or @navtitle attribute is ignored. This is the processing default.
-dita-use-conref-target: See Using the -dita-use-conref-target value for more information.

@linking

Defines some specific linking characteristics of a topic's current location in the map. If the value is not specified locally, the value might cascade from another element in the map (for cascade rules, see Cascading of metadata attributes in a DITA map). Allowable values are:

targetonly: A topic can only be linked to and cannot link to other topics.
sourceonly: A topic cannot be linked to but can link to other topics.
normal: A topic can be linked to and can link to other topics. Use this to override the linking value of a parent topic.
none: A topic cannot be linked to or link to other topics.
-dita-use-conref-target: See Using the -dita-use-conref-target value for more information.

@toc

Specifies whether a topic appears in the table of contents (TOC). If the value is not specified locally, the value might cascade from another element in the map (for cascade rules, see Cascading of metadata attributes in a DITA map). Allowable values are:

yes: The topic appears in a generated TOC.
no: The topic does not appear in a generated TOC.
-dita-use-conref-target: See Using the -dita-use-conref-target value for more information.

@print

Specifies whether the topic should be included in a print-specific rendition, such as PDF. The processing default is "yes". If the value is not specified locally, the value might cascade from another element in the map (for cascade rules, see Cascading of metadata attributes in a DITA map).

Note: Beginning with DITA 1.3, the @print attribute is deprecated. It is replaced with a conditional processing attribute: @deliveryTarget. See @deliveryTarget for more details.

Allowable values are:

yes: Include the topic in the print-oriented file.
no: Do not include the topic in a print-oriented file.
printonly: Only include the topic when rendering the DITA content in a print-oriented context; the topic is not appropriate for other contexts, such as when rendering as HTML.
-dita-use-conref-target: See Using the -dita-use-conref-target value for more information.

@search

Describes whether the target is available for searching. If the value is not specified locally, the value might cascade from another element in the map (for cascade rules, see Cascading of metadata attributes in a DITA map). Allowable values are:

yes
no
-dita-use-conref-target

@chunk

When a set of topics is transformed using a map, the @chunk attribute allows multi-topic documents to be broken into smaller files and multiple individual topics to be combined into larger combined documents.

For a detailed description of the @chunk attribute and its usage, see Chunking.

@keyscope

Specifies that the element marks the boundaries of a key scope. See The keyscope attribute for details on how to use the @keyscope attribute.