Bounding box - Objects aren't drawn at all; instead, this mode shows only the rectangular boxes that correspond to each object's size and shape.

边界框模式-物体不会被绘制；相反，这种模式绘制出矩形盒表现物体的大小和形状。

youdao

Their form and decoration varied widely, from rectangular boxes depicting pastoral landscapes to figural boxes of, say, fruits or animals.

FORBES: Enamored by enamels