I love my very, very smudgable Uni-ball Signo RT1, the fine-tip gel pen of my dreams (and another Wirecutter favorite). I tried to switch to Zebra’s Mojiniline highlighters, which are more smear ...

[Emily] set about gutting several highlighter pens and squeezed out the ink reservoirs into a ladle. The printer’s ink cartridge was then filled with the fluid, and a test print was fired off.

A symbol of a studious individual hard at work, the humble neon highlighter pen is nevertheless often akin to an un-surreptitious sword; brightly coloured and clumsily wielded by many, often ...