How to use $ref to reference a path from another OpenAPI file?

Question

Here it says I could refer to the definition in another file for an individual path, but the example seems to refer to a whole file, instead of a single path definition under th

Answer 1

When referencing paths, you need to escape the path name by replacing / with ~1, so that /a/b becomes ~1a~1b. Note that you escape just the path name and not the #/paths/ prefix.

$ref: 'Anotherfile.yaml#/paths/~1a~1b'