Edit the CKEditor Global profile

Editor appearance
Choose a CKEditor skin.
Advanced settings
The path to CKEditor (the WYSIWYG rich text editor downloaded from ckeditor.com). Provide a path relative to the document root, unless CKEditor is located on an external URL. In such case enter the full URL to a folder with CKEditor.
The simplest way to have the editor running is to use CDN, to use it set: //cdn.ckeditor.com/4.5.4/full-all

Available placeholders:
%b – path of the Drupal installation ()
%m – path where the CKEditor module is stored (/sites/all/modules/contrib/ckeditor).
%l – path to the libraries directory (/sites/all/libraries).
Current path: /sites/all/modules/contrib/ckeditor/ckeditor/ckeditor
The path to the local directory (on the server) that points to the path defined above. Enter either an absolute server path or a path relative to the index.php file. If left empty, the CKEditor module will try to find the right path.
Current path: ./sites/all/modules/contrib/ckeditor/ckeditor/ckeditor
Path to the CKEditor plugins directory relative to the document root.
Available placeholders:
%b – path of the Drupal installation ()
%m – the base URL path where the CKEditor module is stored (/sites/all/modules/contrib/ckeditor).
%l – the base URL path to the libraries directory (/sites/all/libraries)
Current path: /sites/all/modules/contrib/ckeditor/plugins
The path to the local directory (on the server) that points to the path defined above. Enter either an absolute server path or a path relative to the index.php file. If left empty, the CKEditor module will try to find the right path.
Current path: ./sites/all/modules/contrib/ckeditor/plugins
The path to CKFinder (AJAX based file manager downloaded from ckfinder.com) relative to the document root.
Available placeholders:
%b – path of the Drupal installation ()
%m – path where the CKEditor module is stored (/sites/all/modules/contrib/ckeditor).
%l – path to the libraries directory (/sites/all/libraries)
Current path: /sites/all/modules/contrib/ckeditor/ckfinder
The path to the local directory (on the server) that points to the path defined above. Enter either an absolute server path or a path relative to the index.php file. If left empty, the CKEditor module will try to find the right path.
Current path: ./sites/all/modules/contrib/ckeditor/ckfinder
When enabled, ckeditor.js will be aggregated if JavaScript aggregation is enabled. Not recommended.
When enabled, the toolbar can be built by using the drag-and-drop feature. Otherwise you will need to enter the toolbar configuration manually to the text box.