Abstract: A plurality of documents including at least one symbol is scanned by a scanner section so as to be converted to image data. The symbol is recognized from image data by a symbol recognizing section. Next, a table creating section creates a link table in which the symbol included in one page is made to correspond to the other page having a common shaped symbol. A document creating section creates an HTML document using the link table based on an HTML. When the symbol of one page in the HTML document on a screen is clicked, an access to the other page can be obtained.

Abstract: A communication device connected to a packet network, which is provided with a storage portion having communication-tracing-information storing areas respectively assigned to logical channels and a communication processing portion for identifying a logical channel by a network header of transmission or reception data obtained from the packet network when the transmission or reception data is generated, and for writing communication-tracing-information corresponding to the generated transmission or reception data to a communication-tracing-information storing area assigned to the identified logical channel. Thus, communication-tracing-information is stored in the communication-tracing-information storing areas respectively corresponding to logical channels. Thereby, the stored communication-tracing-information corresponding to a logical channel is not written over that corresponding to another logical channel.