I have created the KG-Chart User's Manual.
You can access the page from here: KG-Chart User's Manual
Writing a user's manual in English is a tough job for me as I'm not a native English speaker, and I bet there are many strange sentences in the manual. I'll correct those gradually, but I'll release it anyway so that at least you can see what/how you can do using KG-Chart.
If you have any comments, please let me know... Thanks!