The pencil marks are out! I used 2 things 1stly - sunlight soap - a cake(bar) sprayed the fabric & then went over the lines several time with the soap - washed it - still a bit left then I tried Colgate Optic White toothpaste!!!!!! As it has baking soda & peroxide -(DH,DS - both pharmacists suggested it as it is mixed & to start fiddling with the % of peroxide - say no more! - BUT THEY WERE BOTH A BIT NERVOUS HOVERING )put it on directly - sprayed a bit of water and brushed with a toothbrush - let it stand for about 10 min and then in the machine & dadida it's great.
1 thing is for sure it's not going to fall apart 4 machine washes in so many hours!!!
so thank you to all of you for you help and support this morning!