>>I don't know. whatever SYS(2007, ) uses.
>>
>
>Simply check the Help file:
>
>nFlags
>Set an additional bit value for generating the checksum.
>
>Versions of Visual FoxPro earlier than 8.0 used a CRC16 16-bit algorithm to calculate the checksum values of strings. Visual FoxPro now includes the CRC32 routine to calculate larger 32-bit values. You can control the setting of this algorithm by setting the first bit value of the nFlags parameter.
>
>The following table lists the bit value you can set to produce one of the values for nFlags.
>------------------------------------------
>Default is 16-bit.

I am not setting any flags which mean I am using the default CRC16.

Thanks