Do I need to free memory from dynamically created form?

Hi,

I have a Delphi 2 app using MDI.  The application only allows ONE copy of each window to be in existance.  Code fragment is....

///////////////////////////////////////////////////
procedure TMainForm.CommissionPlanMenuClick(Sender: TObject);
var
  Child: TCommPlanF;
  N    : Integer;  
begin
 
 
  { create a new MDI child window }
  Child := nil;
  with Application.MainForm do
    for N := 0 to MDIChildCount - 1 do
      if MDIChildren[N] is TCommPlanF then
        Child := MDIChildren[N] as TCommPlanF;
  if Child = nil then
    Child := TCommPlanF.Create(Application)
  else {_ NOT if Child = nil then _}
    with Child do
    begin
      if WindowState = wsMinimized then WindowState := wsNormal;
      BringToFront;
    end; {_ with Child do _}
end; {_ procedure TMainForm.CommissionPlanMenuClick(Sender: TObject); _}

///////////////////////////////////////////////////////

This dynamically creates the window.  The question becomes...  Do I need to do something to free the memory after the window is closed or is this done for me automatically?  If I need to free the memory, do I use the TFORM.RELEASE method?

Thanks
GTAS