These notations typically are invisible to someone reading a Word document.

The presence of hidden text in the SCO document is just the latest example of this workplace issue.

Representatives of Bank of America and SCO, including SCO’s attorneys, declined to comment on the document.

Hackers have renderedSCO’s Web site inaccessiblefor long periods.

SCO has alsosued IBM, seeking damages of $5 billion.

This request was not made in the AutoZone or DaimlerChrysler suits.