http://symbolcodes.tlt.psu.edu/accents/codealt.html
1. Have a Windows PC with a separate numberpad.
2. Put the numlock key on.
3. Hold down the ALT key
4. Punch in the 4 digit code (0241, in this case)
5. Let go of ALT key.
6. Voila - ñ
How very clever. I’m saving that!
;-(