UML的基础元件之说明元件



Annotational thingsare the explanatory parts of UML models. These are the comments you may apply to describe, illuminate, and remark about any element in a model. There is one primary kind of annotational things, called a note. A noteis simply a symbol for rendering constraints and comments attached to an element or a collection of elements. Graphically, a note is rendered as a rectangle with a dog-eared corner, together with a textual or graphical comment.

 

说明元件是UML模型中的解释部分．这些注释应用于模型中各类元素的描述，说明和备注．注释是最基本的说明元件．注释仅仅是绘制约束的符号和附加到元素或元素集上的说明．图形表现上，注释由一个在右上角带有小狗耳朵的矩形框表示．同时有一个文本或图形帮助说明．

 

This element is the one basic annotational thing you may include in a UML model. You’ll typically use notes to adorn your diagrams with constraints or comments that are best expressed in informal or formal text. There are also variations on this element, such as requirements (which specify some desired behavior from the perspective of outside the model).

 

这个元素是UML模型中最基本的说明元件．它最典型的用途是为那些有着约束的图添加注释或说明，不管是正式的文本还是非正式的文本，它都能很好的表达．在这个元素上也有变体存在，如需求(从外部模型的视角描述预期的行为)．