1.2 - The option marked in red below gives us the option to format the message in bold Example.
1.3 - The option marked in red below gives us the option to format the message in italic Example.
1.4 - The option marked in red below gives us the option to format the message underlined Example.
1.5 - The option marked in red below gives us the option to highlight the message, as shown in the following example:
1.6 - The option marked in red below gives us the option to format the text in multiple lines.
1.8 - The option shown in the following image

allows us to send emoji's in the chat. According to the example below: