FCKeditor Guide (http://www.fckeditor.net/)

Note: By "FCKeditor directory" we mean "html_editor/fckeditor/" directory here.

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Installation instructions
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1/ Download FCKeditor archive from http://www.fckeditor.net/
(the latest version tested was 2.6.6).
Extract (decompress) the downloaded file into FCKeditor directory. 
Make sure "editor" directory exists as "html_editor/fckeditor/editor".

2/ Rename render.phps file into render.php (if render.php is absent)

3/ Go to Admin Area -> Application Setup and set FCKeditor as preferred WYSIWYG HTML editor

4/ You may want to delete certain files/directories from FCKeditor package because
they are not used 
(i.e. directories "_samples", "_testcases", "editor/filemanager",
files "fckeditor.*" in the FCKeditor directory except "fckeditor.js")
Don't forget to make sure that FCKeditor works ok after you finish this clean-up.


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Upgrade instructions
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1/ Copy/backup the following files from the FCKeditor directory into a safe place :

myconfig.js
readme.txt
render.php(s)

2/ Remove everything from the FCKeditor directory

3/ Follow installation instructions located above

4/ Copy the saved files from the step 1 back into the FCKeditor directory