switch cmd and alt in windows keyboard

Using a windows keyboard, I found myself mistyping cmd and alt/option a lot, because the layout of the macbook pro is the opposite. The easiest way to fix this is to install double command, which is better than KeyRemap4MacBook.

No reboot required, and just go to system preference, select "Command Key acts as Option Key" and "Option Key acts as Command Key".

Input French Characters

不需要用法语键盘（输入法）的简单方法：

^ (circonflexe)
option-i followed by the character you want
Example: ô, Î

` (accent grave)
option-grave accent key (the key beside the 1 and above the tab) followed by the character you want
Example: à, è

´ (accent aigu)
option-e followed by the character you want
Example: é

¨ (diérèse or umlaut)
option-u followed by the character you want
Example: ë, ü

˜ (tilde)
option-n followed by the character you want
Example: ã, õ

ç, Ç (cédille)
option-c, option-C

å, Å (circle)
option-a, option-A

For more advanced information, check this pro page at apple.