Documentation - Update the ASPxClientHtmlEditor.CustomCommand topic

Describe how the EventArgs e.commandName parameter is filled from custom toolbar items in:
- The Menu mode (from the CustomToolbarButton.CommandName property):

ASPx
<dx:ASPxHtmlEditor ... ToolbarMode="Menu">  
    <Toolbars>  
        <dx:HtmlEditorToolbar>  
            <Items>  
                <dx:CustomToolbarButton CommandName="CustomCommandMenuMode"></dx:CustomToolbarButton>  
            </Items>  
        </dx:HtmlEditorToolbar>  
    </Toolbars>  
    <ClientSideEvents CustomCommand="OnCustomCommand" />  
</dx:ASPxHtmlEditor>  

- The Ribbon mode (from the RibbonItemBase.Name property):

ASPx
<dx:ASPxHtmlEditor ... ToolbarMode="Ribbon">  
    <RibbonTabs>  
        <dx:HEHomeRibbonTab>  
            <Groups>  
                <dx:RibbonGroup>  
                    <Items>  
                        <dx:RibbonButtonItem Name="CustomCommandRibbonMode">  
                        </dx:RibbonButtonItem>  
                    </Items>  
                </dx:RibbonGroup>  
            </Groups>  
        </dx:HEHomeRibbonTab>  
    </RibbonTabs>  
    <ClientSideEvents CustomCommand="OnCustomCommand" />  
</dx:ASPxHtmlEditor>  

JavaScript
function OnCustomCommand(s, e) {  
    alert(e.commandName);  
}