CuteEditor is great for HTML document editing, but we also require the following features, to use it as a letter writer (basically we want something along the lines of the TxTextControl but without the need for an ActiveX control):

Ruler with assignable tab markers (I see that the RichTextEditor has a ruler option [but no tab markers]).

Header and footer

Paging (I know you can insert page breaks but automatic paging).

Ideally Word-style property pages (margins, bullet styles, paragraph styles).