Reply to a message in line

Hover over the message or file you want to reply to and click the left arrow that appears on the right (figure 1).



Figure 1 Reply to a message


The message you are replying to will appear in your text box. Type your reply and click enter to send (figure 2):



Figure 2 Add recipients and a message


The message you replied to is displayed with  a blue line to the left and a box around the original message with your reply below.