The content editor consists of a text editor window, toolbars and buttons located on the Content tab of the Page Editor mode.
When you edit a page by clicking on the 
(quick edit) or 
(page editor) buttons, the content editor window is displayed. When you first install your ACM, the default toolbars and buttons are displayed. They are part of the third party RadAjax Editor. Other HTML editors are available for use with the ACM. Speak to your System Administrator to find out which other editors are available for use with your ACM. Other editors come with different buttons and toolbars but all accomplish the same thing - they allow you to create and format content for your web pages.