From the Office Open XML specification:
gridAfter (Grid Columns After Last Cell):
This element specifies the number of grid columns in the parent table's table grid which shall be left after the last cell in the table row.
gridBefore (Grid Columns Before First Cell):
This element specifies the number of grid columns in the parent table's table grid which must be skipped before the contents of this table row (its table cells) are added to the parent table. [This property is used to specify tables whose leading edge (left for left-to-right tables, right for right-to-left tables) does not start at the first grid column (the same shared edge)]
Add support for setting and exporting document metadata, like Title, Author and similar.
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 https://feedback.telerik.com/Project/184/Feedback/Details/219850 ).
The most common filename extension for word processing (text) is .odt.
At this point, only background-color is supported. Add support for bgcolor attribute as well. It could be used with the following tags: body, marquee, table, tBody, td, tFoot, th, tHead, tr.
There are 27 types of border styles in the Open XML specification and they are implemented in RadFlowDocument. Part of the borders are already supported (eg. None, Single, Dotted) when exporting to HTML, all others are treated as None and stripped.
The HTML format doesn't support all types of border styles OOXML format supports.
Such objects are defined as oleObject elements in the XML:
<w:object w:dxaOrig="3795" w:dyaOrig="3555">
<v:shape id="_x0000_i1026" type="#_x0000_t75" style="width:32.85pt;height:30.55pt" o:ole="" fillcolor="window">
<v:imagedata r:id="rId9" o:title=""/>
</v:shape>
<o:OLEObject Type="Embed" ProgID="PBrush" ShapeID="_x0000_i1026" DrawAspect="Content" ObjectID="_1647182330" r:id="rId10"/>
</w:object>Currently, they are skipped on import.
Wrongly imported/exported table cells from nested tables (see the picture below).
