Appeal No. 1998-1389 Page 15
Application No. 08/553232
preferences within the document, but these attributes are not
evaluated until logical objects are mapped into layout objects
during pagination (col. 4, lines 5-9 and col. 15, lines 30-
32). Documents may be content-driven such as an office
letter, or may be layout-driven such as in a catalogue (col.
5, lines 34-45). Smith further discloses (col. 6, lines 50-
54) that the invention simultaneously accommodates both
content driven and layout driven strategies of document
creation. This is accomplished by maintaining a computational
distinction between logical and layout objects. Logical
objects remain separate from layout objects until mapped
thereon by the document manager 16 (col. 6, lines 61-62). To
construct a content-driven document, the user inputs content
and attributes through application program 21. Next, the user
enters layout parameters into the layout objects. Document
manager 16 then generates the final layout parameters based on
user input, the logical objects, and the amount of content
(col. 7, lines 11-28). The paginated document is then sent to
input/output system 23 for conversion to a text stream for
conversion to a viewing device (col. 7, lines 34-38). To
construct a layout-driven document, (col. 7, lines 41-61) the
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