Related Clues:
- Writing tools
- Hard-to-erase stuff
- Common breast-pocket stain
- Con confines
- Fountain pen filler
- Write stuff?
- HP product
- Tools for writers
- It's held in a squid's 37-Down
- Printer's medium
- Liquid from a squid
- Fluid from cuttlefish
- Liquid for writing
- Liquid used to write
- They always go on ahead, blow them!