Profiling results show bottleneck in the line-breaking logic within Paragraph MeasureOverride.

Introduce an option to change the character which follows the list level symbol. By default this is a Tab character, however, they can be the following:
- Tab
- Space
- Nothing (none following character)

In OOXML, this is described using the 'suff' element.
In MS Word, this setting could be changed by selecting the bullet/number of the list item -> Context Menu -> Adjust List Indents -> Follow number with:.

Implement nested mail merge - creating mail merge reports using master-detail tables in a data source.

Typical example of this is creating an invoices with mail merge, where each invoice contains a list of items.

Workaround: for some scenarios creating custom merge field which evaluates to Table could simulate this behavior:
http://www.telerik.com/forums/merge-reports#lUdH39ww00SnEhTLLlrXwA

When a table cell contains nested table, and the paragraph after the nested table is empty, this paragraph could be collapsed, as in MS Word. This gives better look to nested tables, similar to how browsers visualize nested HTML tables.

Note that the paragraph should be visualized when the caret moves the position inside the paragraph.

Currently the paragraph is visualized with its full height, making the layout different than MS Word - it appears that there are redundant space after the nested table.

When a document with table of contents is exported to HTML, the fore color, alignment of the page numbers are not respected; the tab leader is missing and the entries are underlined as hyperlinks.

Most of the CJK characters are not defined or don't look good in fonts not specifically designed for CJK.

Because of this it would be convenient the font to be automatically changed to MS Mincho in case the user starts writing CJK characters. 

Note that if the current font supports CJK (for example Arial Unicode MS), the font is not changed to MS Mincho.

In MS Word the user could add different effects to the selected text. This could be done through Font -> Text Effects... button.

In HTML the width of the columns in a table could be set as proportions of the remaining free space using width="3*"

Example:
<TABLE>
<COLGROUP>
   <COL width="30">
<COLGROUP>
   <COL width="30">
   <COL width="0*">
   <COL width="2*">
<COLGROUP>
   <COL width="1*">
   <COL width="3*">
<THEAD>
<TR><TD> ...
...rows...
</TABLE>



First the user agent will allot 30 pixels to columns one and two. Then, the minimal space required for the third column will be reserved. The remaining horizontal space will be divided into six equal portions (since 2* + 1* + 3* = 6 portions). Column four (2*) will receive two of these portions, column five (1*) will receive one, and column six (3*) will receive three.

Note: This is not supported even by MS Word. 

Add support for importing of imaged defined with VML's v:imagedata inside v:image or v:shape. Currently such images are just skipped.

Documents that are protected using WordsProcessing could be protected using SHA256, SHA512 and SHA384 algorithms. However these algorithms are currently not supported by RichTextBox. Thus, a document protected via WordsProcessing could not be unprotected in RadRichTextBox and NotSupportedException is thrown. Add support for these three algorithms.
Documents protected in MS Word 2013 could not be unprotected in RRTB as well. Exception thrown: Unsupported hashing algorithm: SHA512.

Add support for = (Formula) fields, including the scenario with referencing other table cells.

More information: https://support.office.com/en-us/article/Field-codes-Formula-field-32d5c9de-3516-4ec3-80ed-d1fc2b5bc21d?ui=en-US&rs=en-US&ad=US

This property allows the user to set the transparency of the image watermark. In the OOXML, the property is written using the 'blacklevel' attribute of the image.

Introduce Split Table Command. 

In MS Word, the command is in Table Tools -> Layout -> Merge -> Split table.

Workaround: Use the RadDocumentEditor API to split the table:
 
var tableRowBox = this.radRichTextBox.Document.CaretPosition.GetCurrentTableRowBox();
if (tableRowBox != null)
{
    this.radRichTextBox.BeginUndoGroup();

    this.radRichTextBox.Document.Selection.Clear();

    var currentRow = tableRowBox.AssociatedTableRow;

    DocumentPosition start = new DocumentPosition(currentRow.GetRootDocument());
    start.MoveToStartOfDocumentElement(currentRow);

    DocumentPosition end = new DocumentPosition(start);
    end.MoveToEndOfDocumentElement(currentRow.Table.Rows.Last);

    this.radRichTextBox.Document.Selection.SetSelectionStart(start);
    this.radRichTextBox.Document.Selection.AddSelectionEnd(end);

    this.radRichTextBox.Cut();

    this.radRichTextBox.InsertParagraph();
    this.radRichTextBox.Paste();

    this.radRichTextBox.EndUndoGroup("Split table");
}
 

Add support for math type equations.

Command that converts currently selected text to sentence case, lowercase, uppercase, capitalizes each word, or toggles case, while preserving the styling. A sample demonstrating how to add a custom implementation of a similar command is attached.

Include import and export in open XML - (<w:caps /> property in run properties) and in HTML (text-transform property).

Implement support for exact table row height option. By using this option the text should be clipped when the table row height is lower than the height needed for the text to render. 
The current implementation supports only the at least option.

Add support for importing/exporting macro-enabled document (*.dotm), while preserving the macro content.

Adding support for exporting font style as font tag. Android's TextView for example support styling only using tags.

Currently invalid attribute values, including invalid or empty values in CSS attributes in the 'style' attribute, could cause importing property with incorrect value, or NullReferenceException (the document cannot be imported).
Examples:
----------------------------------------------------------
<table width=”*”>
	<tr>
		<td>More Random Text</td>
	</tr>
</table>

The table is imported with 0 width. Instead the width should not be set.
----------------------------------------------------------
<table style="font-size:;">
	<tr>
		<td>More Random Text</td>
	</tr>
</table>

NullReferenceException is thrown.
----------------------------------------------------------

Workaround: replace the invalid values before import:
string importString = html.Replace("font-style: ;", "");

The unit that is used by default is px. Allow modification to the default unit, say pt.