This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2). For the latest documentation about current CKSource projects, including software like CKEditor 4/CKEditor 5, CKFinder 3, Cloud Services, Letters, Accessibility Checker, please visit the new documentation website.
If you look for an information about very old versions of CKEditor, FCKeditor and CKFinder check also the CKEditor forum, which was closed in 2015. If not, please head to StackOverflow for support.
Error on this page: In the sample code, "basic" should be written with an initial capital letter, as: "Basic". Use of the lowercase version does not work, in my experience.
Looking at the CKEDITOR.config API documentation it looks like not all of the configuration options are listed in there. The two that I particularly used are config.linkShowTargetTab and config.imageShowUploadTab. Is that still a work in progress?