Use the HTML Extensions dialog to add non-standard HTML tags and syntax to a topic.
Add: Adds a new attribute for the HTML Help object, ActiveX control, form element, etc. (Opens the Set Attribute dialog where you enter the value).
Remove: Removes an attribute from HTML Help object, ActiveX control, form element, etc.
Modify: Modifies an attribute for an HTML Help object, ActiveX control, form element, etc.
Attributes: Displays all attributes that are associated with the HTML Help object, ActiveX control, form element, etc. that is selected in WYSIWYG.
Up: Move an attribute up one level in the list.
Dn: Move an attribute down one level in the list.