11-15-90 WXMODEM 1.00j

 1. Source for 1.00i went when my HD crashed, so this is 1.00j based
    on improvements to 1.00h code.

 2. Changed CRC scheme for faster turn around.

 3. Corrected the status of some variables to improve reliability.

 4. Optimized the send loop a bit more to improve speed.