I added this to the bottom of my custom form, so that record create/update history would be shown:

<div class="oe_chatter">
                        <field name="message_follower_ids" widget="mail_followers" groups="base.group_user" />
                        <field name="message_ids" widget="mail_thread" />
                    </div>

However, the first entry lists "mymodule.classname created on . . ."  Yuck.  What do I do to replace the module/object name with a nicer string?