A fine layer of ashes spread on the floor allowed the guards in the chamber to walk without falling.

Semi-transparent layers allow an under color to show through.

The floating layer can be either skimmed or allowed to freeze for removal afterwards.

The layers allow the player to control different components of the game.

In 1930, a top layer of reinforced concrete with a parapet allowed the railway track to become wider.

The layer of mucin allows tears to glide evenly across the eye's surface.

The stable layer of chalk under the ground allowed for vaulted support structures.

These layers allow for the occurrence of lithium diffusion.

On the other hand, very loose-fitting layers can allow more removal of moisture (and heat) via air circulation.

The layer allows different design elements of the website or application to be easily grouped for editing.