>Version : VFP8 (Haven't tested on any other version)
>Command : @ x1,y1 Clear To x2,y2
>Problem : The co-ordinates x1,y1 are zero-based, the x2,y2 co-ordinates are 1-based
>
>The same problem applies to @ x1,y1 Fill To x2,y2. However, @ x1,y1 To x2,y2 Scroll seems to be fine.
>
>Is there a reason for this or is this a bug?

I make this work by using FoxFont. I'm not sure why it works, though: TrueType versus bitmapped fonts, I guess?