This works by printing the contents of a list, and that list contains the contents of a webpage in normal everyday language. The SCN ID points to the webpage that should be printed. If you enter something like "scn://unknown-scn-id" (without the quotes), then it might show a 404 error.
Credit to all sources. Basic SCN IDs: scn://create scn://about scn://welcome scn://for-helpers
