针对解决方案的核心元素所基于的关键组件集提供详细的实现讨论，包括示例代码以及其他适当的解决方案工件。
Provide a detailed implementation discussion, including example code and other appropriate solution artifacts, on a set of critical components on which core elements of the solution are based.
核心函数集将包括管理 x 和 y 光标值、自动换行、分页及呈现文本元素之类的行为。
The core set of functions include behavior like management of x and y cursor values, word wrap, pagination, and the rendering of text elements.
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