Chromatron, a game

This is a puzzle game of laser beams and mirrors. Fang, a former classmate, gave it to me. And it is full of fun. There four generations of this game, the frst one is free and the rests are not. Even the first generation is hard.

The writer must be a person who works or has worked in physics for years since myself works in this field for many years. If you think you are genius, don't miss this one.

How to print watermark in M$ excel.

Officially, Excel does not support background printing. The best way we found is to use header and footer. View->Header and Footer..., then we can insert a picture as a background. Don't worry, if the header is a picture, it will be lying rather under the table than stack on the top of the table.

One more thing, is that normally, a picture file is obvious large compare with a excel file. So if someone just need a text based watermark, then wmf file is not a bad idea.

THE GATES

The famous Christo and Jeanne-Claude have just finished their newest art work, the gates in Central Park of New York City. As avant-gardes of modern arts, we should rush to the spacetime get a feeling of it in our vivid life.

You can goto their website to have a look.