External links test

This question embeds external links in its content so that LockDown Browser's content-link behavior can be exercised. PrairieLearn is opened in a stemmed (rldbwn) child window with blocked navigation to outside sources, so clicking one of the links below should show "LINK IS BLOCKED" on the toolbar rather than navigating away.

Try opening this YouTube video:

A couple of other external links, useful for confirming the same blocked-navigation behavior on different sites:

The same YouTube video is also embedded directly in this page as an iframe:

Click one of the external links above. What happens?

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QID:
Title:
External links test

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Started at:
2026-08-04 20:45:27 (CDT)
Duration:
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{
  "link_behavior": {
    "key": "c",
    "html": "\n    Navigation was blocked and the toolbar showed "LINK IS BLOCKED".\n  ",
    "score": 1,
    "feedback": null
  }
}
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