Do you need to add a copyright symbol to your page? Or perhaps a member of your lab has a diacritical mark in their name? The CK Editor has a list of special characters that you can insert into your body text. Below, you can see where it is located:
When you click on the special characters button, this dialog box will open:
If you click on one of the characters, it will be inserted where the cursor is. You can achieve something similar by pressing and holding down a key for a character that has alternate forms while you are typing in the WYSIWYG text box.
When a speech bubble similar to the one above appears, press the number key corresponding with the symbol you want and your letter will transform into the form you selected.