GROUND

A base mark: the panel a folded shape stands on. On the 3D page the shape folds up from that panel, the panel on the floor and the rest of the shape above it, as a mate puts a part with another, but with the floor. Put one on each shape (each blank). To place one by clicking, use the Identify Base Tool.

Syntax

GROUND @id,point,layer

Argument	Meaning
point	A point inside the panel the shape stands on, in the flat drawing.

The id, layer and any settings after it are the element settings. A base mark is drawn as a small ring over a ground sign. It is never cut, creased or exported, and doesn't change the panels: put it on a layer that isn't cut (the Dimension layer, 8).

How the shape stands

Without a base mark, a shape folds up from its largest panel, which stays where it lies (the whole shape lifted if some of it folds below the floor). With one, the panel it is on stays where it lies, on the floor, and the rest of the shape folds up from it; if the shape's creases fold it below that panel (its inside facing down), the whole shape is turned over so that it rises from the panel. A second mark on the same shape, or one whose point isn't on a panel, is said on the 3D page and left out. A mark with RULE AS="NONE" is left out quietly.

Examples

GROUND @20,P1,8

The shape that P1 is on stands on the panel P1 is in.

In the library

P44=[X2+L1/2,-FM/2]
GROUND @16,P44,8

A cereal carton (from Run Parametric) standing on its bottom, not lying on its largest side: the point in the middle of the bottom's front flap. The gable-top and handled carry cartons, the counter display tray and the bottle platform insert (on a foot) have one too.