I accidentally used gel pen in my exam and i didnt realise till after it😭 actually so scared bc it just said use black or blue ink and i used black ink. Other sources have said that if the ink is dark it should be fine or that if its gel they flag it and mark the physical paper but that was all for gcse and im wondering if its the same for nat5s? Will it melt when it gets scanned or is that just friction pens?