Black Biro on fabric sofa - tips to get it off??

[cazinge]

I was writing my Xmas cards working on the sofa and got distracted by Neighbours The News and wrote on the sofa

There is some on one seat cushion which I could always turn over but also on the arm. They are IKEA washable covers but the main cover (which covers the arm) is too big to go in the washing machine.

Any tips for getting it off?

There's a Stain Devil for ink. I've used it to remove black biro from a sofa cushion before and also on our suede sofas. The Sainsbury's near me sells it in the laundry section.

Thanks xx