>Hi Craig
>
>I have looked up the code and I really appreciate the logic. One question I have is that FCREATE() after creating will keep the file open till the user exits from the app, no need of maintaining the returned file handle nor of FCLOSE()ing it. Hope I have understood it correctly.
>

Correct.

>Second is that you have assumed that there is a users table where the filename can be stored. Have you any suggestion where there are no users table, yes my users want concurrent execution but are not interested in login and such.

The user still doesn't need to login. Capture the workstation name and store it in a table. That's can be invisible to the user.

>
>Please advise.