Coordinate system (glossary)

Definition
Set of 3 vectors representing the directions of each axis, which origin is the centroid.

Properties
In World editor, when elements (objects or groups) are selected, the coordinate system is graphically represented by 3 colored axis, as for the view cube: Its origin is the centroid of the one or more selected elements.
 * red for  axis
 * green for  axis
 * blue for  axis

Clicking and dragging an axe allows to move the whole selected elements.

The arrow of an axe (vector) show the positive way.

3 colored diagonals between the vectors also complete this system, allowing to drag the selected elements onto the related plane.