InheritScope

is an option for DynamicModule that specifies whether to attempt to bind variables referenced in the DynamicModule to a parent DynamicModule instance.

Details

With the setting InheritScope->True, the DynamicModule is connected to a parent DynamicModule that may be in a different cell or notebook, for the purpose of resolving DynamicModule variables.
With the setting InheritScope->False, a DynamicModule will continue to inherit variable settings from a parent instance that wraps the DynamicModule instance onscreen.
InheritScope affects the behavior of a DynamicModule output that has been displayed in a notebook. It has no effect on a DynamicModule that is suppressed from being displayed.
InheritScope only affects evaluations triggered from within the displayed form of another DynamicModule. Such evaluations might be triggered by Dynamic or by operating a control such as Button or ActionMenu.
If there is no parent DynamicModule, or if the evaluation was triggered by a evaluation, then the setting of InheritScope has no effect.
The connection between DynamicModule instances established by setting InheritScope->True is sometimes referred to as a "DynamicModule wormhole".

Create a dialog box with a DynamicModule that inherits variables from a parent DynamicModule:

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