A tooltip (a.k.a. card layout) what appears when you hold the mouse over the link to an object; it is a box with more details about the object. You may customize the tooltip for most of the major types of objects, like quotations, companies, users, persons etc.
A tooltip consists of a number of fields from the object, or from associated objects. F.ex. a quotation has an associated company and an associated user, so the tooltip may also include fields from the company and the user.
For some object types you may define two tooltips; the other is used when displaying an autocomplete search results and these should probably hold less information, to allow many objects to be displayed at once in a search result.
Editing
You simply drag fields from one of the right side lists of fields to the left side box; you may drag the fields in the left side box to reorder them. Click on the X to remove a field.
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