I'm looking for this all day long and I just can't find it. People say it's the backslash \ key so does the official support but that doesn't work!
Sneltoetsen voor Lightroom (in Dutch it's badly translated as "Alleen Voor weergeven")
So can someone please help me with this. You'll need an AZERTY keyboard and not QWERTY for this issue. So people from Belgium, maybe even France or Germany, do you guys know a solution for this problem?? I use Windows 7 and Lightroom 6.6
EDIT: this has been asked before here but for an older version of Lightroom: backslash shortcut doesn't work in my ligthroom 5
Okay, I've found it! This topic can be closed but keep it please for future reference and the Belgian people.
* Close Lightroom 6.6
* Open--> C:\Program Files\Adobe\Adobe Lightroom\Resources\nl
* Edit--> TranslatedStrings.txt
OLD = "$$$/AgDevelop/Menu/View/BeforeAfter/Before/Key=^L"
NEW = "$$$/AgDevelop/Menu/View/BeforeAfter/Before/Key=<"
* Save as--> administrator
* Open Lightroom 6.6 and now even the menu says the right keyboard shortcut!