DOCUMENT PREPARING DEVICE

PURPOSE:To effectively use an external memory by preserving only right an left margin information stored at every row without preserving a character code after a page whose document is not included in the external memory. CONSTITUTION:A preservation means to preserve only the right and left margin information stored at every row without preserving the character code of the page after the one in which no document is included out of the documents, and a row information developing means to develop the row information of the document to be called at the time of calling the document are provided. Furthermore, a document call means to transfer the document to a document developing area 131 after setting right and left digit spaces at a row information developing area 132 in case the right and left digit spaces are set by referring to information developed by the row information developing means is provided. In such a way, it is possible to reduce the quantity used on a floppy disk area at the time of preserving the document, and to increase the number of documents to be registered.