Changes added after TRichView 13
Delphi XE2's visual styles are supported in components and dialogs. The function RVA_ChooseStyle allows choosing and applying one of available styles.
Inverted (a light text on a dark background) color schemes are supported.
The file actions allow choosing a code page for text files (including UTF-8). This feature can be disabled by assigning TRVAControlPanel.UseTextCodePageDialog=False.
New actions:
TrvActionTableCellRotationNone
Changes added between TRichView v12 and v13
New units of measurement
All dialogs display values measured according to new TRVAControlPanel.UnitsDisplay and TRVAControlPanel.PixelBorders properties.
Properties of several actions are measured in TRVAControlPanel.UnitsProgram.
New images
A new set of toolbar images is available, created specially for RichViewActions. This set of images is used in this manual.
New component images are used in the Delphi/C++Builder's Component Palette for the components included in RichViewActions.
New properties of TRVAControlPanel
TRVAControlPanel.DefaultDocParameters define a page layout for new documents (especially useful for ScaleRichView)
New TRVAControlPanel.DialogFontSize property.
Changes in menus
New TRVAPopupActionBar component (for Delphi 2006 or newer).
The type of ActionList property for menus was changed from TActionList to TCustomActionList, to allow using TActionManager.
Changes in actions
New action: 
TrvActionHide. TrvActionShowSpecialCharacters shows/hides a hidden text as well as special characters.
New properties:
•TrvActionFontEx.AutoApplySymbolCharset
•TrvActionInsertHLine.Style defines the style for inserted horizontal lines
•TrvActionBackground.CanChangeMargins allows/disallows changing margins
•TrvActionParaBullets's and TrvActionParaNumbering's IndentStep defines default indents for list levels.
TrvActionParaList.IndentStep now affects indents of list style templates in non-HTML dialog too.
Other changes
New RVARibbonUtils unit.
Ability to use CleverComponents for downloading images.
Changes added between TRichView v11 and v12
New actions:
New methods, properties and events
•TrvActionInsertFile.InsertFile method
•TrvActionInsertPicture.Spacing property
•TrvActionParagraph.OutlineLevel property (paragraph dialog has a new combobox for specifying a paragraph outline level)
•TrvActionItemProperties.OnCanApply event
New features:
•New types of vertical alignment for pictures in TrvActionItemProperties.
•Properties dialog for breaks (TrvActionItemProperties) has a new combobox for specifying a break style (line/rectangle/3d/dotted/dashed).
•Pasting HTML from the Clipboard using rvHtmlViewImporter.
•New datamodules with alternative toolbar images (GlyFX and Fugue Icons)