I'm not completely sure, I think with ortholinear is used to indicate "array" layout keyboard like the Plank (first Google image link: https://www.pinterest.com

I'm not completely sure, I think with ortholinear is used to indicate "array" layout keyboard like the Plank (first Google image link: https://www.pinterest.com/pin/440508407294189587/ https://www.pinterest.com/pin/440508407294189587/ )