Biro on Cinema Display

[Will Cheyney]

Being a designer I am fanatical about maintaining a clean screen.
Yesterday, a person who shall remain nameless used a dirty old biro to point around my screen leaving little 'dots' in three places on my Cinema Display.

Screen cleaner and a mild-alchohol don't work - worried I might do something irreparable if I used something stronger such as mentholated spirt.
Any suggestions?

 

[furious]

saliva? it may work, since it is mildly acidic. it get pen ink off skin and my desk, walls just kidding about walls never tried.

 

[iMeowbot]

The citrus-based solvent cleaners (I'm talking more about the strong concentrated stuff, not the household varieties in spray bottles) work really well on ink and won't eat the screen surface. I would be afraid to try any petroleum-based cleaner (which methylated alcohols sometimes contain).