COMMUNICATION DEVICE, COMMUNICATION METHOD, AND COMPUTER USABLE MEDIUM

A letter string editing unit of a communication device receives an edit instruction for a letter string, and edits a letter string in accordance with the instruction. A decide input reception unit receives a decide instruction for the letter string together with operation strength. When the decide instruction is received, a sending unit sends a sender side message specifying the edited letter string and strength information associated with the operation strength to another communication device. A reception unit receives a receiver side message specifying a letter string to be displayed and strength information from another communication device. A font acquiring unit acquires information of a font having a size pre-associated with the specified strength information. A display image generation unit generates a display image by depicting the specified letter string in accordance with the acquired font information. A display unit displays the generated display image.