.topic 0x00 No topic has been associated with this item. .topic 1 Closes this window. .topic IDH_HOMEPAGELINK_STATIC Link to this program's home page. .topic IDH_HOSTLINK_STATIC Link to the web page of our web page sponsor.The lines that begins with '.topic <something>' specifies the combined identifier of the dialog box/control id for which there is the tool tip text.