I raised this with our account manager last year when it disappeared,
the answer given was 'the wiki is no more, please reference the CLI
guide on the docs site for your release version'.
Bug 621313 has been resolved in FCT 6.2.7 as per release notes:
https://docs.fortinet.com/document/forticlient/6.2.7/windows-release-notes/22791/resolved-issues