The reference marks on the document indicate important information.

The sea marks guided the ships safely into the harbor.

The stress marks indicate the correct pronunciation of the word.

The touch-marks on the wall indicated that someone had been here before.

The tomahawk marks on the tree were evidence of the Native American presence.

She marks time by tapping her foot.

The man marks the paper with a red pen.

The hall-marks on the silverware indicated its authenticity.

She has several strawberry marks on her arm.

The costs of the marks are high.