Does it show up on all report previews? Does it always have the same size and position? Any other relevant info?

>Hi,
>
>Some of my clinet are using ALL-in-one system board ( Display/Sound/Lan/modem built-in on system board)
>
>i found that when i preview a report on screen, that will display some small box also.
>
>and the position of small box as like as the four concer of some object on report )
>But it will not come out when preview output at EXCLE or WORD.
>
>????