The thmx file extension is associated with Microsoft Office 2007/2010 themes.The themes are stored in *.thmx files, and the built-in Office themes are stored this way in C:\Program Files\Microsoft Office\Document Themes 12\.

The format of a thmx file itself is a ZIP-based format (just like the OpenXML file format).
With the use of the thmx templates, it is possible for users to create uniform looking documents in Word (also in Excel and PowerPoint).

Workaround: Currently, exporting of RadDocument style sheet is supported only to custom XAML format (http://docs.telerik.com/devtools/wpf/controls/radrichtextbox/features/styles/style-sheets ).

If an RTF file contains hyperlink with backslashes in the URI, it is imported broken. Usually, similar hyperlinks are pointing to a local file.
As a workaround, another syntax may be used. For example, "file:///".

When symbol is inserted in underlined word, the underline color of the inserted symbol is always black and doesn't respect the underline color of the word.

Also, when Track Changes is ON and some symbols are inserted, the underline color is black instead of being red. Probably the root cause is the same for both behaviors.

When misspelled word is corrected with the spell checker, and the word is just before the comment range end, the comment range end is moved after the previous word.

Steps to reproduce:
1. Open RichTextBox and type the following sentence: "This sentence has a wrong speling".
2. Select the entire sentence and click "New Comment" button.
3. The comments range start marker displays before "This...." and comment range end marker displays after "...speling"
4. Right click on word "speling" to change "speling" to "spelling"
Result: The spelling gets fixed as expected, but the comment range end moves before the word "spelling".

When doing word-by-word spell checking, the spell checking dialog sometimes covers the misspelled word, so the user cannot see the context of the word without manually moving the dialog. It would be nice if there was a way to change the position of the dialog while spell checking so that it doesn't cover the context of the word.

The method CopyContentFromOverride is a protected method used for copying of inline specific content. This method is not called each time from the CreateElementCopy method.
As a workaround of copying your properties ovveride the CopyPropertiesFromOverride method.

When the paragraph starts with Annotation with SkipPositionBefore = true, TabForward command does not detect that the caret is actually at the beginning of paragraph, and inserts Tab character instead of changing left indent.

Workaround: Subscribe to CommandExecuting and cancel the InsertTextCommand with parameter "\t" if the caret is at such position

Steps to reproduce:
- Insert a paragraph in the document.
- Put the caret at the beginning of the paragraph and insert bookmark (without selection).
- Put the caret at the beginning of the paragraph and press tab.
Expected: Paragraph's Left indent is changed.
Observed: Tab character is inserted.

Currently Find dialog searches only in the editor from which it's started, e.g. if the user presses Ctrl+F in a comment, only the text of this comment is searched.

A table in the body is wider than a table in the header when the document is printed. 

Steps to reproduce:

- Insert a tables in the header and the body.
- Print the document

Expected: The table in the body has the same width.
Actual: The table in the body is wider that the table in the header

Add full support for spell checking of comments. Currently the words are not underlined, and the user cannot show the suggestions in the context menu; but it can trigger the spell checking dialog from the UI command.

Check if this is possible for other child editors like footnotes/endnotes.

Horizontal table borders are drawn outside of the table when vertical table borders are not present. The issue is very visible when background is applied to the table cells - the ends of the horizontal borders finish just outside the table cell background.

When the HightlightColorPicker is in DataTemplate its image cannot be set to a different than the default one. When the control is not in template it is working properly.

By specification this is a sample RTF color table group:

{\colortbl;\red0\green0\blue0;\red0\green0\blue255;\red0\green255\blue255;}


Currently , if there is a whitespace separator (" ") before the tag delimiter (";") an RtfColorTableFormatException is thrown, for example:

{\colortbl ;\red255\green255\blue255 ;\red79\green79\blue79 ;}


Instead, such documents could be easily imported by trimming the whitespace.

Table borders and line spacing seem lost when exporting a document and showing it back in the editor. Making another roundtrip respects the settings.

Implement commands and UI for producing labels using Mail Merge. 

Behind the scenes this is implemented as Table with the proper number of table columns and rows, and eventually (depending on the setup) NEXT field (https://support.office.com/en-us/article/Field-codes-Next-field-3862fad6-0297-411a-a4e7-6ff5bcf178fd?ui=en-US&rs=en-US&ad=US) - so this will eventually require implementing NEXT field.

Note: In MS Word, this is in Mailings -> Start Mail Merge -> Labels...

When TrackChanges is disabled and a text is changed, the Copy command should copy the content as all changes are accepted. So, for example, deleted text is not copied.

Import of HTML containing an element with defined list-style-type styling, which is not a list, will result in loss of the information in the element.
Here is example:
<div style="LIST-STYLE-TYPE: decimal;">
<p><span>Hello world</span></p>
</div>

"Increase Indent" and "Decrease Indent" buttons in the Ribbon (the same commands are invoked when Tab is pressed in specific situations) apply different indent step to the selected paragraphs, depending on the number of selected paragraphs: 
- when applied on one paragraph, the indentation is changed with 18.0 px. 
- when applied on two paragraphs, the indentation is changed with 36.0 px.
- and so on.

When floating images are placed in a header or footer, and are positioned outside of the text editor's area, they are not visualized. 

MS Word visualizes such images as slightly grayed out (similar to watermarks) in normal mode, and always visualizes them in Header/Footer edit mode.

This item is merged with another one concerning the same issue. Please, follow the item at https://feedback.telerik.com/Project/143/Feedback/Details/174624 .

Add support for Widow/Orphan control property of Paragraph. In Open XML specification, this is named "widowControl (Allow First/Last Line to Display on a Separate Page)".

The problem is that as this property is not supported, RadRichTextBox acts as it's 'false' and also doesn't export it, but the default value is actually 'true', which causes layout differences between RadRichTextBox and MS Word.