You can define the boundaries of a space manually. Manual boundaries have grips to edit the boundary shape of each boundary. If you insert a new space with manual boundaries, by default the offsets between the boundaries are 0. To grip-edit manual boundaries, you first must activate the boundaries and then grip edit them.
Grip-editable manual boundaries
In a non-associative space with manual boundaries all 4 boundaries are grip-editable. In an associative space with manual boundaries, the net, usable, and gross boundaries are editable. The base boundary of an associative space is controlled by the boundary objects.