Magnus nods. He brings his hand, flat, to his face so that his fingers are touching his chin, and then moves the hand forward. "That's basic thanks," he says. "Two hands" -- and here he demonstrates that -- "Add emphasis. Thank you very much. There's also a version where you move your hand more, like this," stroking vertical circles in front of his chin, "that also emphasizes it."

He considers, and then says, "If you say no first" -- and here he demonstrates again, palm out, fingers splayed, waving briefly as he shakes his head, and then signing thanks again, "That means no thanks. If someone gives you information that you like or need, you can also say thank you like you're tipping a hat... I think that might also be after your time, but it's like this." He demonstrates.

"And then there's thankful, which is the same thing as grateful, which is --" He makes the same hand-shape as thank you very much, but taps them each to the sides of his chin a few times instead of the center.

Then he sits back, ready to walk Galahad through any of the signs again.