Example demonstrates Width, Height and FixedToolBar properties use effect. The first HTML Editor component instance has hard fixed toolbar (one rows for lite buttons set), but the Width doesn't allow the lite buttons set be placed in hard fixed toolbar. So we see, that part of buttons is lost. The second HTML Editor component instance has not hard fixed toolbar, and buttons allocates so many rows in toolbar as is necessary (two rows here).

Example code

<ed:Editor Width="660" runat="server" modeswitch="false" submit="false" />
<ed:Editor Width="660" runat="server" FixedToolBar="false" modeswitch="false" submit="false" />