During the 1980s references to the human figure began to appear in their work, through the use of symbolic forms such as trees or boats.

The player must avoid obstacles, such as trees and moguls.

Of equal importance to short ground run is the ability to clear obstacles, such as trees, on both take off and landing.

Furthermore, there are very few objects (such as trees) to help judge distance.

This property is relied upon by all vascular plants, such as trees.

It did not show any detail, but the outlines of large things, such as trees, could be made out.

Objects such as trees were added to complete the design.

Most leaves of growing plants, such as trees and bushes, are green.

They are used to identify natural objects such as trees, insects and dinosaurs.

For most of the year, they call from high positions, such as trees and gutters.