Module layer 

The layers a drawing is drawn on (see Layer), in the order a sheet writes them (ALL).

Constants

ALL

Every layer of a drawing, as its sheet lists them.

BORDER

The sheet’s frame and title block.

CENTER

Centre lines and marks: axes of holes and cylinders.

DIMENSION

Dimensions, balloons and the parts list.

HATCH

The hatching of a section’s cut faces.

HIDDEN

The part’s edges and silhouettes behind its faces.

THREAD

Thin continuous lines: a cosmetic thread seen.

VISIBLE

The part’s edges and silhouettes seen.