To insert a Unicode character, type the character code, press ALT, and then press X. For example, to type a dollar symbol ($), type 0024, press ALT, and then press X.

Alt Code Symbol ---------- -------- alt 127 ⌂ alt 155 ¢ alt 156 £ alt 157 ¥ alt 158 ₧ alt 159 ƒ alt 164 ñ alt 165 Ñ alt 166 ª alt 167 º alt 168 ¿ alt 169 ® alt 170 ¬ alt 171 ½ alt 172 ¼ alt 173 ¡ alt 174 « alt 175 »

ASCII, stands for American Standard Code for Information Interchange. It is a 7-bit character code where each individual bit represents a unique character.