The aim is to get the opposing team's blue marker over your own 2m line.
Ivo erased the design and picked up the blue marker, looking askance.
He drew a typical sine wave on the whiteboard in the room using a blue marker.
The two yellow and eight blue markers had been removed.
She has green eyes, but he had only a blue marker - and artistic license.
Pace took a wooden pointer from a table and indicated a blue marker on the map.
Follow the blue markers up to the main drive, which you cross.
"See, this is my incision," she said, drawing on it with a blue marker.
He leaned way over to sign his name, in blue marker, to a woman's T-shirt.
But reporters tell us that these runs are sometimes groomed, and then have blue markers, not yellow.