User defined component - how to set tooltip on Component Palette?

So, I created a new component, derived from an existing TControl type.

When I installed it, it appeared on the Component Palette (is that what it's called) at the top of Delphi at design time, to allow me to add it to a form.

How do I change its tooltip text开发者_如何学Go -the one that shows if I hover over the Component Palette at deign time?

The tooltip is automatically build from the component characteristics; depending on the version of Delphi, it will be different:

• D2007:
  ClassName(Unit.Ancestor Class).
  for example: TDataSource(Classes.TPersistent) or TButton(Controls.TControl)

• D2010:

  Name: Classname
  Unit: UnitName
  Package: PackageName

like

Name: TButton
Unit: StdCtrls
Package: dclstd140.bpl