How do you clean WSXGA screen?

You don't - as you can't get inside the screen without breaking it.

DRESSES. GENTLY with a LIGHT amount of windex and a CLOTH TOWEL! something smooth... (Your wife, girlfriend's or your silk dress would do nicely).

because it may become home to various fungi which may drop potentially dangerous spores which have the capacity to be annoying to anyone using the computer who suffers from hayfever should they...

If you have a clean hanky or glasses wipe then you can just wipe it jently but if you have grotty finger marks, dir, glue or stick stuff then get a cloth and VERY lightly wet the cloth make sure it...

Use methylated spirits