Having read the Lum. Lan. explanation it seems it is
to the right, but by the same token, it should also be "expose for the right" to avoid highlights.
So basically, I think the most catchy slogan is:
"Expose
to the right to retain shadow detail, but make sure you expose
for the right as well, so only expose to the right enough to keep shadow detail, but not to blow the highlights"
