| 摘要 |
<p>PURPOSE:To execute the presentation of a document efficiently and at a high speed by executing efficiently processings of the start and the end of a document data stream. CONSTITUTION:A document expressed by structured hierarchical page description language is processed. The document is given as a document data stream defined by a hierarchical structure having a picture or a pageset as a top level, and the pageset and the picture consist of a prolog of option, or a prolog and a body of option. The body of the pageset consists of a zero piece or one piece or more of pagesets or pictures. The body of the picture consists of a zero piece or one piece or more of pictures or token sequences. The picture and the pageset have 'begin' and 'end' for defining the start and the end of its definition.</p> |
