Hi Boris,

You should be able to find it on the MSDN CD that ships with VS or VFP 6. Anyway it doesn't contain much info (see below)

---

SYS(2007) Algorithm for Checksum
Last reviewed: June 27, 1995
Article ID: Q101289


The information in this article applies to:
Microsoft FoxPro for Windows, versions 2.5, 2.5a, and 2.5b
Microsoft FoxPro for MS-DOS, versions 2.0, 2.5, 2.5a, and 2.5b
Microsoft FoxPro for Macintosh, version 2.5b
The SYS(2007) function returns the checksum value of the character expression . The correct syntax is SYS(2007,). A checksum can be used to test the validity of data or to compare two character expressions.

NOTE: Checksum is a "byte-oriented CRC-16" algorithm. The exact logic was last published in the February 1986 edition of "Dr. Dobbs Journal."

---

PS: In the future, please use more descriptive text in the subject line.

>Maybe some body have a copy of article Q101289 SYS(2007) Algorithm for Checksum looks like it's been removed from Microsoft site

kenweber
GCom2 Solutions
Microsoft Certified Professional