I had to call in a couple of big markers.

Some form of marker on the ground is a great help here.

Every move he made was in relation to the series of markers.

The 21 and over had been crossed out with some sort of marker.

"The drug would wait for a decrease of certain markers in his system."

Terri had already moved on to another group of markers.

He never got around to putting any kind of marker on her grave.

The ring may move over any number of markers in a row.

"Because we are living in a world of markers," he replies.

I stepped back to look at the arc of white markers.