Notes 20130505

'tc' and 'netem' allow you to simulate some network environments
For example, I can delay every packet for 1s, such that in some case I can cheat in games.

Google Chrome complains about "profile cannot be opened correctly": remove the 'web data' folder in the config dir

To remove PDF password with gs
gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=unencrypted.pdf -c .setpdfwrite -f encrypted.pdf

IE10 would ignore the `word-spacing` CSS rule if the width for the space char is 0, in a TTF font. Is it a bug of IE?

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