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Abstract

A method and apparatus for processing external inclusions in a document processing language. The external inclusions can have varying formats and each of these varying formats are handled efficiently. A picture/pageset stack is used to keep track of the hierarchical levels of the document and refers to a data structure used for keeping track of the information pertaining to the external inclusion. It is possible for the external inclusion to include other external inclusions and an input stack and an input list data structure is used for keeping track of the various input files which may be open. It is possible for the external inclusion to have a plurality of nested tags having the same name and a tag mark stack is used in order to keep track of these elements within the external inclusion. In order to keep track of an external entity defined within a <|DOCTYPE element occurring at the beginning of an external inclusion, a location entity linked list data structure is used. Different processes including an external input filter process, a process for handling the <|DOCTYPE element, an ending process, and a process for handling the end of the structure ID element are each used in order to efficiently process external inclusions.

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First Claim