The smallest interesting FSON file: an object with a comment, one bare key and one quoted key. Every line of it is also valid JSON5, and all but the comment is valid JSON.

One file that exercises every FSON addition at once — nested block comments, -- disabled members, a |-block string, hex and Infinity numbers, single-quoted strings and trailing commas — so you can see them side by side.

A realistic service configuration: nested objects, a disabled credential kept for reference, a key with a space, an array of retry delays. The file the dotted-path getters in the User Guide query.

A three-file %include chain: service.fson merges defaults from base.fson and binds secrets.fson under an alias. Shows host-wins shallow merge, relative-path resolution and the provenance API.