Chat Window

[slm]

noobie question: how is this chat supposed to work? If I click chat window, I cannot type a new msg.
I tried making a keyboard shortcut for "send chat message", bound to key C.
When pressing this, it opens a window where I can type the message. But: the message now cannot contain character c. So, what do I need to do to get the window where you type the message and I can type any characters to my chat message?

One of the things that was so easy in IL2.