It's covered in details in VFP9 help under What's New in Visual FoxPro -> Guide to Reporting Improvements -> Migration Strategies and Changes in Output Rendering

>I'am trying to migrate my application to the VFP9,
>only i've a headache why ? when use just reports via compiled VFP9,it changes font sizes,page setup etc.
>when i set SET REPORT BEHAVIOR 80 there is no problem :(
>
>And also at some reports When REPORT BEHAVIOR=80 ,
>VFP9 losts cursor ( usually i'am not using DataEnvironment on my reports )
>
>PS : this situation is being allready selected requiered cursor :(
>
>Please help about this issue,
>
>i wantto use power of VFP9 report engine and another Report listener features on my reports,
>without redesign my reports again...
>