Open VFP Help. Click the Index tab and type DataSession. In that topic, double-click on the Described sub-topic. In the right frame, scroll down to Using Data Sessions.

>I am sure this has been asked before but I missed it so I am asking again.
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>I am not clear on how data is handled when using Private vs Public data sessions.
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>Where can I get a clear explanation.
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>In particular what are the side affects of changing a forms datasession from public to private. The application does
>use a few global variables, but the are thinks like userid, timeout for message boxes, etc (around 5 or 6).
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>The forms are in two broad catagories:
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>1. front end for reports where datasession is in the form not the report.
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>2. data entery forms which may call other forms.
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>The application was rewritten in VFP 5 (orignal was FPW 2.6)
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>It needs to be moved to VFP 6 and eventually 7.
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>Any pointer appreciated.