Writing my own typing monitor program for RSI sufferers...

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    >> I want to write a program that will let me know after thirty minutes
    >> of typing that I need to take a five minute typing break.  But when I
    >> stop typing it's smart enough to pause the 30 minute timer
    >> automatically.  This is under the X-Window System (Linux).

Take a look at

    http://sourceforge.net/projects/watch/

If you'd like to be added as a developer, let me know...

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