Implement support for content controls (a.k.a. Structured document tags), which will allow inserting editing controls in the document:

- Rich Text
- Plain Text
- Check Box
- Combo Box
- Drop-down list
- Date picker

Do not confuse this feature with form fields support (see http://feedback.telerik.com/Project/143/Feedback/Details/146869 ).

Currently, the address tag is not supported and everything within this tag is skipped on import.

Some fonts doesn't include bold and italic font styles. Currently text formatted with such fonts and with applied bold or italic formatting is exported without the italic or bold effect. Instead, the default typeface can be exported, and additional transformation could be applied to the letters itself - e.g. skew transform for the italic.

Expose property allowing the customers to show the popup without transparency.

In localizing your demo code for a RichTextBox I noticed some size mode-related inconsistencies in icon placements in the various sorts of buttons:

In Size=large, generally the icon appears above the button text. In the split button the icon is centered over and partially obscures the text. Unacceptable!

In Size=medium, generally the icon appears to the left of the text. In the Split button it appears below the text. Either is fine but should be consistent.

Also, when Size=medium and icon beside text, in all buttons I would like to see more spacing between the icon and the text; there seems to be virtually none.

Implement the export of notes (footnote, endnote) in the PdfFormatProvider of the RadRichTextBox.

Currently, the only customization that can be performed is using HyperlinkToolTipFormatString property of RadRichTextBox, which sets the format for all hyperlinks in the document of the control. It would be nice if it were possible to be able to set different tooltips. 

 Support page-breaks in html import/export.

Add a property that controls the spellcheck underline color 

The Popup needs to be triggered to recalculate its position.

The following fixes the issue in PasteOptionsPopup.cs
 

Support should be implemented for importing height CSS property applied to HTML table cells.

This element specifies the presence of a symbol character at the current location in the run’s content. It is similar to the sym element and is used to add emojis to the document content. The symEx element is not defined in the Office Open XML specification but it is part of the extensions of MS Word to the Office Open XML.

HTML export of RadRichTextBox to perform font-size export in different units.

If you export a document using the HtmlFormatProvider, all style properties which contain measurement units are exported in pixel units. This makes the exported documents look much smaller when opened on devices with higher pixel density.

WORKAROUND: use Regex to find, convert and replace the font-size attributes

            HtmlFormatProvider html = new HtmlFormatProvider();
            string res = html.Export(document);
            Regex regex = new Regex(@"font-size: [0-9]*\.?[0-9]*px");
            Match match = null;

            do
            {
                match = regex.Match(res);
                if (!match.Success)
                {
                    break;
                }

                string value = match.Value.Substring("font-size: ".Length, match.Value.Length - "font-size: ".Length - "px".Length);
                double pts = double.Parse(value) * 72 / 96;
                res = res.Replace(match.Value, @"font-size: " + Math.Round(pts, 4) + "pt");
            } while (match.Success);

            File.WriteAllText("output.html", res);

Add ability for Import/Export of custom attributes to HTML.

Create different options for pasting(keep formatting, merge formatting, use destination styles). At this point, the document default styles are not copied in the document fragment, thus their loss is observed. 

When DocumentInheritsDefaultStyleSettings is true and the font settings are like set to different font size/font family, copied text is pasted to MS Word with Verdana font, size 12. Loss of formatting is also observed when copying from RadRichTextBox and pasting in MS Word - the default styles differ.

Right click image > text wrapping > more layout options > text wrapping tab

Word supports "Largest Only" but RichTextBox only has both, left, and right.

An option that enables users to paste any rich text content as a picture of it.

Currently floating images specified using the VML shapes are imported as non-floating, for example:

<v:shape id="_x0000_s1026" type="#_x0000_t75" style="height:180.25pt;margin-left:62.25pt;margin-top:1.65pt;position:absolute;width:180.25pt;z-index:251658240" o:preferrelative="t">
        <v:imagedata r:id="rId4" />
</v:shape>

MS Word has support for line numbers (see attached file) but RichTextBox ignores them. Could we get support for Words line numbering options?