The omnioutliner:// URLs generated by Edit > Copy As Link can be used as hyperlinks within a document, and from a different document as long as the target document is already open. It also works from Safari and BBEdit. However, I want to use them to activate a document location from FileMaker, but it doesn’t work because FileMaker doesn’t recognize the omnioutliner protocol. Fortunately FileMaker can execute AppleScript code, so that’s my approach.
One specific question… the Row element has an id attribute. Is that id the same as what you see in a URL like this? omnioutliner:///open?row=jeWKuEMJCby