Tokens are dynamic variables in dashboards that let users interact with the data. A time picker, dropdown, or text input sets a token value, and panels use that token in their searches.
For example, a dropdown with token name `selected_host` could filter all panels: `index=main host=$selected_host$`.
Drilldowns let users click on a chart element to navigate to another dashboard, a search, or a URL. This creates an interactive, exploratory experience.
index=main sourcetype=$selected_sourcetype$ | stats count by host