Is serail.write() blocking?

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4

On my Windows PC, version 0022:

C:\Documents and Settings\Owner\Desktop\arduino-0022\hardware\arduino\cores\arduino\HardwareSerial.h
C:\Documents and Settings\Owner\Desktop\arduino-0022\hardware\arduino\cores\arduino\HardwareSerial.cpp

Depends somewhat on where you installed it. So basically:

<install directory>\arduino\hardware\arduino\cores\arduino\HardwareSerial.h
<install directory>\arduino\hardware\arduino\cores\arduino\HardwareSerial.cpp