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Semantics is the science of meaning; in this case, used to assign roles, states, and properties that apply to user interface and content elements as a human would understand.For instance, if a paragraph is semantically identified as such, assistive technologies can interact with it as a unit separable from the rest of the content, knowing the exact boundaries of that paragraph. views module •Add placeholder settings to string or numeric filters. • Include views data table provider in views dependencies.
The role taxonomy describes inheritance and details the attributes each role supports.
This allows elements with a given role to be understood as a particular widget or structural type regardless of any semantics inherited from the implementing host language.
Roles are a common property of platform accessibility which assistive technologies use to provide the user with effective presentation and interaction.
For example, the user may need to, or choose to, interact with a slider widget via arrow keys, instead of dragging and dropping with a mouse.
In order to accomplish this effectively, the software needs to understand the semantics of the content.
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For example, web application developers create collapsible tree widgets in element.