As you are defining the elements of the sketch with the user, it becomes apparent that a Document artifact is necessary to define the validation rules for a particular field.

在您和该用户定义元素草图时，就会意识到，需要使用Document工件来为特定的字段定义验证规则。

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When the sketch enters designing field, the magnetic field has affected its form of expression.

当素描走进设计场．这里的磁场便影响了它的表现形式；

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In addition they can sketch diagrams, use a laser pointer or run videos to aid employees in the field.

BBC: IBM's robot sidekick aims to aid field engineers