Characteristics of Grammatically-Specified, Publication- Oriented, Structured Document Representations

现有的系统已经证明了结构化文档表示的可用性和实用性。该表述的持续重要性因其被纳入ISO SGML国际标准草案（8879）而得到保证。最近的研究开发了用于操作结构化文档的用户界面，这些文档包含了组件相互关系的语法定义。随着这种用户界面设计从研究转向开发，有必要更仔细地研究这种表示的优缺点。将调查两个方面。第一个问题是如何在支持这种表示的环境中帮助合作作者的活动。这些作者可能会与松散耦合的独立计算机进行交互——可能是通过间歇性的低带宽链路。该项目的这一部分的一个重要部分将是开发允许重新划分已经结构化的文档的机制。第二个方面是将面向线的绘图的说明与显示该绘图的上下文分离的程度。结构化文档的强度是这种与文本材料隔离的程度。这部分研究的目的是开发一种线条画模型，允许与显示环境类似的隔离。

Existing systems have demonstrated the structured document representation's usability and usefulness. The representation's continued importance is insured by its inclusion in the ISO SGML Draft International Standard (8879). Recent research has developed user interfaces for manipulating structured documents that incorporate a grammatical definition of their component's interrelationships. As this user interface design shifts from research to development, it is appropriate to more closely examine the strengths and weaknesses of the representation. Two aspects will be investigated. The first is how the activities of cooperating authors can be aided in an environment supporting such a representation. Such authors may be interacting with separate computers that are only loosely-coupled--perhaps over an intermittent, low-bandwidth link. An important part of this portion of the project will be the development of mechanisms that permit repartitioning of the already structured document. The second aspect is the degree to which the specification of a line- oriented drawing can be isolated from the context in which the drawing is displayed. A strength of the structured document is the degree of such isolation with textual material. This portion of the research is directed to developing a model of line drawings that permits a similar isolation from the display context.