A section of the wall above him creaked and slid away.

He put his shoulder against the wall and a section slid aside.

A section of the wall slid aside to form a doorway.

It must double as a switch, for a section of wall slid aside.

The upper section of the ladder should slide easily up and down.

There was a whirring sound, and a section of the office wall slid open.

At his order, a section of the wall slid open to reveal a viewer.

The outer door closed, the section of wall slid away, and a man stepped through.

A section of the wall slid back to admit the newcomer.

A section slid under the weight but somehow did not collapse.