If someone sends you an e-mail message, you should not forward it toanother person with out the permission of the person who sent the message originally. All sorts of problems can result from forwarding e-mail to people the message was not originally intended for. Previous displays the previous unread message. Basically you will move back up the list of messages unread messages in the current folder that is selected. Next displays the next unread message in the currently selected folder.
Print prints the currently selected message.
Stop interrupts the transfer of an e-mail message. Many of these functions performed by these buttons can also be achieved through choices in the pull down menus from the Menu Bar. For example, if you open the pull down menu under File on the Menu Bar, you will notice Print is one of the options. See how many of the other Tool Bar functions have corresponding options on the Menu Bar. Experiment with each of the buttons on the Tool Bar so that you are comfortable with the way each one works.