##### 3.1.6.7 no-topic-nesting

The <no-topic-nesting> element is a placeholder in the DITA architecture. It is not actually used by the default DITA document types; it is for use only when creating a validly customized document type where the information designer wants to eliminate the ability to nest topics. Not intended for use by authors, and has no associated output processing.

###### Contains

Doctype | Content model
topic, concept, ditabase, glossary, glossentry, glossgroup, reference, task, machineryTask, learningAssessment, learningContent, learningOverview, learningPlan, learningSummary | no content

###### Contained by

Doctype | Content model
ditabase, glossary, glossentry, glossgroup | glossentry
learningAssessment | learningAssessment
learningContent | topic, task, concept, reference, learningSummary, learningAssessment
learningOverview | learningOverview
learningPlan | learningPlan
learningSummary | learningSummary

###### Inheritance

- topic/no-topic-nesting

###### Example

This element is not intended to be used in source files.

###### Attributes

Name | Description | Data Type | Default Value | Required?
global-atts attribute group (xtrf, xtrc) | A set of related attributes, described in 3.4.1.2 global-atts attribute group |  |  |
class | A common attribute described in 3.4.1.9 Other common DITA attributes |  |  |

Previous Topic: 3.1.6.6 itemgroup

Next Topic: 3.1.6.8 state

Parent Topic: 3.1.6 Specialization elements

Sibling Topics:

3.1.6.1 boolean

3.1.6.2 data

3.1.6.3 data-about

3.1.6.4 foreign

3.1.6.5 index-base

3.1.6.6 itemgroup

3.1.6.8 state

3.1.6.9 unknown