According to the help:

Remarks
When the AutoYield property is set to False (.F.), and program code is executing,
Window events are placed in a queue. DOEVENTS executes all pending Windows events
and processes any user code associated with the Windows events. If no events are
in the queue, Visual FoxPro disregards DOEVENTS and continues program execution.

So, what is the effect of issuing a DOEVENTS when AutoYield property is set to True (.T., default)? Any?

Also, any changes between VFP6/7/8 (other than DOEVENTS() syntax being dropped) in the behavior?