To use it you hold down the Alt key type a four-digit number starting with zero on the number pad not on the number keys above the letters and then let go of the Alt key. You can read the in-depth instructions for Macintosh for more details. Alt Codes When You Must Use An Umlaut Whether Or Not Anyone Else Cares Keyboard Symbols Computer Basics Coding For instance to type á hold down OptionE then type lowercase A. How to type special characters in spanish . Opt u then u ü To type the upside-down punctuation marks press the following keys all at once. Accents special characters in Spanish. Type OptionU then either lowercase U for ü. The ANSI character for the specified ANSI decimal character code. B From the top of the screen go to Insert then Symbol and then you will see the chart with all of the accentssymbols. To type the á you need only strike the apostrophe key and then the letter a. Click on the Start menubutton - Go to Control Panel. 17 rows How to type speci...