Size restriction of the target structure.
No size restrictions. This may cause incompatibility to other programs. Restricts the structure to single structure of unlimited size..
Larger size from 1.16 - latest. Restricts the structure to single structure of a max size of 48x48x48.
(Default in all operations) Traditional size from 1.9.0 - latest. Restricts the structure to single structure of a max size of 32x32x32.