In the Box Modelling tutorial on page 327 of the Practical Guide, it instructs exactly this:
“Hide the outside edgeloop of polygons by CTRL+SHIFT+LMB Clicking on them”.
What is LMB? I’m sure it’s something embarrassingly simple, but I can’t find an example or explanation for it in the guide, even though it appears several times during the box modelling tutorial. I’m familiar with the other hide/reveal techniques, but this has got me stumped.
So how exactly does one hide the outside edgeloop?