By choosing this mode, it is possible to select entities only on only one view of the sheet of drawing where the origin was validated.

The coordinates (X, Y) are taken compared to the selected origin. This origin can be a point of sketch, a summit, a circular edge (they are coordinates Xc and Yc of the center which is taken into account), the center of a circle or an arc of a circle.

In this mode, all the selections (2D or 3D) of the coordinates to be extracted can be used (see choice of the selections). These entities are projected on a level parallel with the sheet, it does not have there concept of Z.