3.0 Beta's "Single Page" view
In 3.0 Beta, the dropdown that allows to switch between Page View and Continuous View has a new "Single Page" option added. It seems to simply eliminate page boundaries and create a single page of infinite size, but still with limited system width as if the margins are still present. The result is similar to that of going into Preferences / Canvas and selecting to scroll pages vertically, except that page borders are not visible. What is the purpose of this feature? Was it useful for debugging layout in a simplified environment?