To facilitate this, 4gls typically provide graphical editors to visually design the GUI and proprietary scripting languages and APIs to tie user-driven events to specific business logic.

为此，4gl通常提供图形编辑器来支持以可视方式设计GUI，并提供专有脚本语言和API来将用户驱动的事件绑定到特定业务逻辑。

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GMF allows you to effectively map (see Figure 5) your semantic (business logic) model to a notional (graphical) model.

GMF将使您可以把语义(商业逻辑)模型高效映射到概念(图形)模型(参见图5)。

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A formal model of PASCAL process blueprint, graphical notations of abstract logic structure diagram, and a fundamental programming procedure...

文中给出PASCAL过程蓝图的形式化模型，抽象逻辑结构图的图形表示方法，以及程序设计的基本过程。

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