An explanation of the Builder Tool’s viewport, and how to navigate within it.

There’s a 20×20 grid to build on. Those are the current extents, though that’s subject to change.

In terms of moving the camera around in the viewport there’s both button navigation and the mouse/keyboard navigation to choose from.

Essentially, if you’re accessing through a mobile device you’ll use the buttons, and if you’re at a desktop or laptop you’ll use the mouse/keyboard.