I also agree that the descriptions are confusing.
Took me a while to figure out why I was only seeing 7 bits on the left side of the images. Didnt realize that the first bar was connected to the 1st bits.
To make things easier, I suggest you overlay at least one image, or partial image, with actual values over the bits. That will show visually, without any need for description, of how things are supposed to be recorded.
Also, instead of writing Gutter, the letter G should suffice. Theres no reason to make people type even more than they absolutely have to.
In your description, you list the red line as the gutter... which does not make sense. In the image, the red line separates the left bits from the right... which is good, cause it helps visually break up the image. Last time I had to tape a piece of string on my monitor to achieve this same thing - which sucked, as it left tape residue behind.
I believe you meant to say that the blank horizontal rows that have no bits at all, are gutters. Such as Ive noticed between rows 7 & 8.
You also do not say if gutter is supposed to be written before row zero, and after row 15. And, are gutters really needed to be written? If they are all the same, then why bother to write them in?