笔墨纸砚是中国古代文人书房当中必备的宝贝，被称为“文房四宝”。用笔墨书写绘画在中国可追溯到五千年前。秦时已用不同硬度的毛和竹管制笔；汉代以人工制墨替代了天然墨；有了纸张以后，简牍锦帛逐失其用；砚台则随笔墨的使用而发展。 “文房四宝”到宋朝以后特指湖笔、徽墨、宣纸、端砚。可以说文房四宝书写了整个中华文明。

Microsoft has just announced the addition of two new pens to its OneNote app on Windows: the Fountain Pen and the Brush Pen.

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Freestyle swimming has been included in every modern Olympics. Currently, freestyle is contested in more Olympic events than any other stroke, at distances of 50m, 100m, 200m, 400m, 800m, and 1500m.

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