Cell提供一些常用函数，然而Cell更注重自定义函数功能，采用C，VB，VBscr ipt等语言皆可以编制自定义函数。自定义函数可以无限制次数的嵌套。除了数值与字符串两种数据类型外，Cell还定义了单元格数据类型与区域数据类型，极大地增强了函数的易用性。-Cell to provide some common functions, but focus more on Cell Function-defined functions using C, VB, VBscr ipt and other languages are able to prepare a custom function. Since the definition of unlimited number of functions can be nested. In addition to numerical and string data types in two outside, Cell also defines the data type cell types and regional data, has greatly enhanced the ease of use functions.