Here's the PC keyboard,  showing  the  unshifted  and  ALT
values for each key. With most linux software, the ALT key
shifts to the upper half of the ANSI 8859-1 character set.

`à 1± 2² 3³ 4´ 5µ 6¶ 7· 8¸ 9¹ 0° -­ =½ \Ü
    qñ w÷ eå rò tô yù uõ ié oï pð [Û ]Ý 
     aá só dä fæ gç hè jê kë lì ;» '§ 
      zú xø cã vö bâ nî mí ,¬ .® /¯ 


Here's the same thing with SHIFT and SHIFT-ALT:

~þ !¡ @À #£ $¤ %¥ ^Þ &¦ *ª (¨ )© _ß +« |ü
    QÑ W× EÅ RÒ TÔ YÙ UÕ IÉ OÏ PÐ {û }ý
     AÁ SÓ DÄ FÆ GÇ HÈ JÊ KË LÌ :º "¢
      ZÚ XØ CÃ VÖ BÂ NÎ MÍ <¼ >¾ ?¿