DEVICE, METHOD AND PROGRAM-RECORDING MEDIUM FOR PREPARING DOCUMENT DATA, DEVICE, METHOD AND PROGRAM- RECORDING MEDIUM FOR ANALYZING DOCUMENT DATA, AND SYSTEM AND METHOD FOR DISPLAYING DOCUMENT

摘要

PROBLEM TO BE SOLVED: To allow document display suitable to a reader. SOLUTION: A document data prepared in this document data preparing device 30 is input into a document data analyzing part 52 via a communication part 51 and an input and output interface 33. When detecting a portion embedded with plural display contents of expression levels corresponding to plural display levels in the document data, the document data analyzing part 52 compares the expression level with a set user level, and selects the display content of the expression level of the user level or less nearest to the user level, to be displayed on a display 35.