Visualization drilldown is a feature in Splunk dashboards that enables interactive responses when a user clicks on a visualization element like a chart or a table. This functionality can be configured to perform several actions, including setting or unsetting tokens. These tokens act as variables within the dashboard's Simple XML source code. By using the or attributes on a panel, its visibility can be tied to the state of a token. Therefore, clicking one visualization can set a token that, in turn, shows or hides another panel on the same form.

A. "Vent drilldown" is not a recognized or standard term within the Splunk platform's official documentation or features.

B. Workflow actions are used to interact with data at the event level, typically to launch secondary searches or link to external resources based on specific field values, not to control dashboard UI elements.

C. While the action is contextual, "contextual drilldown" is a broad term. The specific mechanism for configuring a chart or table to perform an action is the "visualization drilldown" editor in the UI.

1. Splunk Documentation: Dashboards and Visualizations

"Use drilldown for dashboard interactivity". This section details how to configure actions when users click on dashboard elements. It explicitly covers the "Set token" action

which is the core mechanism for the described behavior.

Reference: In the subsection "Use a token to show or hide a panel

" the documentation states: "You can configure a drilldown to set a token that controls whether a panel is hidden or displayed."

2. Splunk Documentation: Simple XML Reference

"Dashboard element options". This reference describes the element and its child elements

including and .

Reference: The documentation for explains that the depends and rejects attributes can be used to "Show or hide this panel depending on the value of a token." This confirms how tokens set by a drilldown action control panel visibility.