Boundaries, and a hint to the puzzle's starred answers

Usage examples of dividers.

But the familiar odors of food and bodies, the sounds of voices and cutlery on china, the vision of long rows of snackbushes and conventional crop plants, of tomato, lettuce, onion, pepper, carrot, cabbage, and broccoli plants, of herbs and flowers--even a gengineered amaryllis or two with their face-like blossoms--all growing in knee-high planters stretched along the walls and extended through the room as dividers, all quickly restored the sense of the familiar.

Girardieau walked with a swaying motion that began somewhere near his shoulders, like a pair of architect's dividers being walked across a drawing board point to point.

I looked through the lower drawers on each side of the kneehole, and saw a cardboard box half filled with unused file dividers.

Zedd sighed as he bent to forage for a towel among the litter of maps, dirty plates, rusty dividers, empty mugs, blankets, chicken bones, rope, an egg he'd lost in the middle of a lesson weeks back, and other paraphernalia that seemed to collect over time in the corner of his small field tent.

Then, with Pitts hands firmly clamped on his ankles, Hunnewell pulled out the steelpointed dividers that he normally used for plotting distances on charts and rammed them deeply into the ice.

The finance office was actually three offices separated by room dividers of wood and glass, plus a small closed-off workroom containing supplies and a mimeograph machine.

He ducked under the canvas cover of the chart table and communed with his parallel rule and dividers.

Jan marked off the distance with a pair of dividers to the spot Pryor had indicated, then used a parallel ruler to get the exact bearing for the point where the tow had dropped, and for its estimated position on the bottom.