if it is oke you wil have a block at the end of the letters. It is open. Maby you have two to select a small and a big one. these are the spaces this is on my machine (Janome) but as far as I know it is the same as my first Brother, Yvonne,
When I bought my second hand machine 3 years ago it took me ages to work this out. Can you believe that it was my DH who worked it out in the end. Unfortunately I did not know anything about the Cute family then.
You have the answer by now - just wanted to say I asked the same question about my 780D and it is also the _ (underscore) that makes spaces between words.
I have found that many times depending on the letters and the font.... that I need to use the _ twice to get a good space between my words.
MJDG
The brother manual explains, I think it is different for my machine, however all the letters start at the bottom left to connect. christine Live Laugh Download Stitch!
I didn't know how either when I used mine the first time, but I played with it until I figured it out.
The under score, as mentioned, does the trick. Just check it out.
Good luck!