The archaeologists identified inner markers that indicated different phases of settlement.

The archaeologists carefully documented the outer markers surrounding the ancient tomb to map the burial site's boundaries.

The surveyors placed middle markers along the boundary to ensure accuracy.

The pilots relied on the air markers scattered across the training field to practice formation flying.

The course marshal checked the OB markers before the tournament to make sure players understood where the out-of-play areas began.

The children used Magic Markers to decorate the cardboard castle for the school play.

The logistics manager reviewed the on-time markers to ensure shipments arrived when scheduled.

I labeled the boxes with permanent markers to ensure the writing wouldn't smudge.

The chef used china markers to label the recipes on the porcelain platters for the tasting event.

By analyzing genetic markers, scientists can identify population structures and migration patterns.