PDBML文档目前包含多至177个类别的信息，其中大多数是可选的。

PDBML documents currently contain up to 177 categories of information, most of them optional.

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一名发言人说：“这个类别目前正在研究之中。”

"The category is currently under research", a spokesman said.

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这个类别包含了目前被认为是交互设计（Interaction Design，IaD）团队的主要内容的活动，也就是创建用户角色（User Personas）并理解用户目标。

This category comprises the activities that are currently considered the primary ones for the Interaction Design (IaD) team, namely creating the User Personas and understanding the User goals.

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