Related Clues:
- Ballpoint fill
- Bic fluid
- Works on, as comics
- Signs, as a document
- It's usually not erasable
- Tattoo, in slang
- Shirt pocket stainer
- Embarrassing shirt-pocket stain
- Coverage by the press
- Tattoo colour loses power
- Publicity, slangily (and presumably before computers)
- Sine
- What quills are dipped in
- Alternatives to toner
- Autographs, so to speak