TextBar - Show text edit bar (F10)
Rich text edit controls allow displaying a toolbar, which provides basic text formatting functions. Those functions are also available in the context menu (Format/...), but the toolbar is more comfortable and provides two additional functions. All text formatting options apply on the selected text. Some functions (as Top margin or Indent) apply on paragraph settings.
Setting text font and size is also possible via font settings (Format/Font).
Notes:
This is not a perfect text editor, but sufficient to write the documentation you are just going to read. Other rich text edit features (as spell check) are under development.