Levenwick- the mystery of the invisible purl increase

One of my favorite knits so far has been the Levenwick cardigan by Gudrun Johnston . I have worn it countless times, and it is my most admired knit, both in person and on Ravelry. I was asked by a friend of mine to make another one, and I happily obliged. And what better time then now, when there are still 2 months left before the deadline for the Luvinthemommyhood Summer Sweater KAL runs out.

I thought it would be a quick project, since I have already knit it once. I was making quick progress on the cardigan until I got to the yoke, which for increases uses the "invisible purl increase". I remember stumbling across this part the first time around as well, so I hopefully turned to my notes. Alas, I did not make any on this particular subject. So I turned to Google, which surprisingly, failed me, as it had the first time around. I had no choice but ti figure it out on my own....again.

The pattern notes give the following instructions:

"Insert the right hand needle from the top down into the purl stitch that sits below the next stitch on the left needle. Purl this stitch and then purl the next stitch on the needle."

A decent explanation, but I am that kind of girl that needs pictures. So here's my first ever tutorial on the "invisible purl increase".

Now, I have no way of verifying that this is indeed the correct way of doing it, all I can say that this is how I have knit it. If I am incorrect, please let me know!

And at this point a "thank you" to my husband who took these photos despite some serious hay-fever this morning!