For example, if this property equals 1, the custom cap width is 10, the custom cap height is 5, and a line is drawn with a pen with a width of 3, then the cap is drawn 30 units wide and 15 units high.

例如，如果该属性等于1，自定义线帽宽度为10，自定义线帽高度为5，并且用宽度为3的钢笔绘制直线，则所绘制的线帽有30个单位宽、15个单位高。

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The cap of this pen doubles as a stylus tip, giving users the option to write with ink on paper in the iNotebook device and then quickly switch over to writing with a stylus in the app.

WSJ: Pen and Paper Find a Place in the Digital World

The cap rings of the pen are encircled by a stylized roll of celluloid.

FORBES: Writing Instruments As Objets D��Art