Any accompanying text should be written in plain language, related to a theme or topic rather than simply describing the data.

There, at the far end of the windowless passage, was a plain, black door.

Here, the blacks, spread all across the plain;

To the north, the mountain chain descends to the Oti alluvial plain.

When Sam thought of water even his hopeful spirit quailed. Beyond the Morgai there was the dreadful plain of Gorgoroth to cross.

They had gone some miles, and the road was at last running down a long slope into the plain, when Frodo’s strength began to give out and his will wavered.

Dusk veiled their feet, and mist rose in the hollows. Away in the east the evening light lay pale upon the dim lands of distant plain and wood.

They could, if they had known the lands, with some delay have retraced their steps a little, and then turning east have come round over hard roads to the bare plain of Dagorlad: the field of the ancient battle before the gates of Mordor.

The earth was much nearer, and below them were trees that looked like oaks and elms, and wide grass lands, and a river running through it all. But cropping out of the ground, right in the path of the stream which looped itself about it, was a great rock, almost a hill of stone, like a last outpost of the distant mountains, or a huge piece cast miles into the plain by some giant among giants.