Receiving device and method for processing attention message

A receiving device for processing an attention message, the receiving device comprising:

• one or more processors configured to execute instructions;
• a memory storing the instructions, wherein the execution of the instructions by the one or more processors configures the one or more processors to:
• receive a message via a network, the message being a chat message transmitted from a transmitting device operated by a first user and directed to a second user in a chat room in which the first user and the second user participate;
• determine that the received message is an attention-specific message specifically for instructing display of an attention indicator in a user interface of the chat room;
• respond to determining that the received message is an attention-specific message by setting an attention display flag in the memory, the attention display flag being a flag indicating that the attention indicator is to be displayed;
• and
• display the attention indicator in the user interface of the chat room based on attention display flag having been set,
• wherein the message includes an ID of the chat room, an ID of the transmitting device, an ID of the first user, a type indicator indicating a type of the message, a content of the message, and a time of the message, and
• wherein the determining whether the message is an attention-specification message in based on the type indicator of the message, the content of the message, or a transmission time.