In computer text, the tilde is produced by inputting \~

i.e.: \~{n} for jalape\~{n}o or just \~n will be understood by most.

Some word processor programs will allow you to chose the character set or map. The Spanish set has the character for this. Otherwise, cut and paste from a known source, as I did here. Ñ or ñ

2> “Select” the ñ or any symbol you wanted and then click “Copy”. Right click the destination where you wanted it to be, and choose “Paste” to transfer the ñ .

160 á

161 í

162 ó

163 ú

164 ñ

168 ¿

173 ¡

Its called a “tilde” in spanish