On the "Step 3: Upgrade the Drupal site" page, it states:
"The machine names of the layouts must match between the Drupal 7 theme and the Backdrop Layout Template used during the upgrade(defined in settings.php)."
How is the layout Backdrop Layout Template set in settings.php (what's the key)?
My goal is to set Boxton as the Node layout template during migration, as opposed to the out-of-the-box Simmons template. Any help would be greatly appreciated. Thanks!